unit 6 algebra - weebly
TRANSCRIPT
Unit 6Exponents
Thursday March 25, 2021 Activator
Where is the exponent button?
Evaluate the following for y.
y = (5)(5)(5)(5)(5)
๐ฆ = 52(53)y = 3125
y = 3125 Page #3 Lesson 6.1
Todayโs Objective
Students will be able to multiply, divide, and expand with exponents.
Unit 6Lesson 1
Write in expanded notation and simplify.
43(42)
(x)(x)(x)(๐ฅ)(๐ฅ)
45 ๐๐ 1,024
๐ฅ3(๐ฅ2)
(4)(4)(4)(4)(4)
๐ฅ5Page #3 Lesson 6.1
Where is the exponent button?
Todayโs New Vocab (1 of 4)
.
Write in Expanded notation. Then, simplify.
(32)4
(32)(32)(32)(32)
(3โ 3)(3 โ 3)(3 โ 3)(3 โ 3)
3โ 3 โ 3 โ 3 โ 3 โ 3 โ 3 โ 3
38 or 6,561
(๐ฆ2)4
(๐ฆ2)(๐ฆ2)(๐ฆ2)(๐ฆ2)
(yโy)(y โy)(y โ ๐ฆ)(y โ ๐ฆ)
๐ฆ โ ๐ฆ โ y โ ๐ฆ โ y โ ๐ฆ โ y โ ๐ฆ
๐ฆ8
Todayโs New Vocab (2 of 4)Page #3
Lesson 6.1
Todayโs New Vocab (3 of 4)Write in Expanded notation. Then, simplify.
27๐ฅ4
23๐ฅ
2 2 2 2 ๐ฅ๐ฅ๐ฅ
2 2 2 2 2 2 2 ๐ฅ๐ฅ๐ฅ๐ฅ
2 2 2 ๐ฅ
24๐ฅ3Page #3
Lesson 6.1
Todayโs New Vocab (4 of 4)Are the two problems equivalent (equal)? Yes
(2๐ฅ3)2 ๐๐๐ 4๐ฅ6
(2๐ฅ3)(2๐ฅ3) 4xxxxxx(2)(x)(x)(x)(2)(x)(x)(x)
22๐ฅ6
4๐ฅ6Page #4
Lesson 6.1
GWQโs
#1#2#3#4#5
#6#7#8#9#10
24,21,12,7,36
28,19,16,4,44
26,22,13,1,45
30,18,16,9,43
25,17,14,5,39
24,21,12,7,36
26,22,13,1,45
28,19,16,4,44
30,18,16,9,43
25,17,14,5,39
Page #1-2 Lesson 6.1#15 is a fraction answer.
Thursday March 25, 2021 Work Period
What is the product of 8.05 โ 106 and 3.5 โ 102 ?
(8.05)(10)(10)(10)(10)(10)(10) โ (3.5)(10)(10)
(8.05)(3.5)(10)(10)(10)(10)(10)(10)(10)(10)(8.05)(3.5)(108)
(28.175)(108)
(2.8175)(108+1)
(2.8175)(109)
Page #4 Lesson 6.1
Thursday March 25, 2021 Exit Ticket
.
The product (multiplication) of (3๐ฅ)2 and 6๐ฅ3
(3x)(3x) โ (6)(x)(x)(x)
(3)(3)(6)(x)(x)(x)(x)(x) commutative
54๐ฅ5
Write in expanded notation.
What property?
Page #4 Lesson 6.1
Thursday April 8, 2021 Activator
800, 400, 200, ____, ____, ____
-6, 18, -54, ____, ____, ____
What are the next three in the sequence?
Pattern?
Pattern?
100 50 25
162 -486 1458
๐ท๐๐ฃ๐๐๐ ๐๐ฆ 2
(-3)Multiply ๐๐ฆToday, we are doing horizontal tables.
Page #7 Lesson 6.2
Multiply ๐๐ฆ1
2
Todayโs Objective
Students will be able write Geometric sequences.
Unit 6Lesson 2
Todayโs New Vocab (1 of 4)How do you determine the pattern?
3, 6, 12, 24
900,300,100,33.3
๐0, ๐1, ๐2, ๐3
๐0, ๐1, ๐2, ๐3
๐2๐1๐2
๐1= 12
6= 2
๐2
๐1= 100
300=
1
3
Multiply by 2
Divide by 3Page #7 Lesson 6.2
Todayโs New Vocab (2 of 4)
Page #7Lesson 6.2
Make a table for this pattern.
x a(x)
0 3
1 6
2 12
3 24
๐๐ฅ = 3 (2)๐ฅy = B (๐ถ)๐ฅ
3, 6, 12, 24๐0, ๐1, ๐2, ๐3
(2)(2)(2)
Todayโs New Vocab (3 of 4)
๐๐ฅ = is the answer๐0= the beginning blankC = the change (or ratio)x = number we are finding
Use Algebra to determine the 8th number.
3, 6, 12, 24,โฆ๐๐ฅ = 3 (2)๐ฅ
๐8 = 3 (2)8
๐8 = 384
Page #8 Lesson 6.2
X used to make a table and graph.
y = B (๐ถ)๐ฅ
Todayโs New Vocab (4 of 4)Geometric Sequence (Division) What is the pattern (c) and what is ๐5? 6
384, 192 ,___ , ___, ___, ___๐0 ๐1 ๐2 ๐3 ๐4 ๐5
C =๐2
๐1=
96
192=
1
2
(1
2)
Page #8 Lesson 6.2
x a(x)
0 384
1 192
2 96
3 48
4 24
5 12
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
2,5,9,11,13,15
3,6,10,12,14,16
Page #5-6 Lesson 6.2
2,5,9,11,13,15
3,6,10,12,14,16
2,5,9,11,13,15
3,6,10,12,14,16
2,5,9,11,13,15
3,6,10,12,14,16
2,5,9,11,13,15
3,6,10,12,14,16
Thursday April 8, 2021 Work Period
.
In a Geometric sequence, the beginning term is 2 and the common ratio is 3. What is the 7th term ?
๐7 = 2 (3)7
๐7 = 4374Page #8Lesson 6.2
x a(x)
0 2
1 6
2 18
7 4374
(3)๐๐ฅ = 2 (3)๐ฅ
Thefunction
y = B (๐ถ)๐ฅ
(3)
6, __, __, ___, ___, ___, ___๐0 ๐1 ๐2 ๐3 ๐4 ๐5 ๐6
(3)
Thursday April 8, 2021 Work PeriodIn a Geometric sequence, the beginning term is 6 and the common ratio (C) is 3. What is the 6th
term ? Write the pattern from ๐0๐ก๐ ๐6. Page #8 Lesson 6.2
Monday April 12, 2021 ActivatorWhy/how is the right line curved? There is an exponent in the function/equation.
f(x)= 3x f(x) = 3๐ฅ
Page #11Lesson 6.3
Linear(Straight)
Not Linear(Not Straight)
Todayโs Objective
Students will be able to graph exponential functions.
Unit 6Lesson 3
Todayโs New Vocab (1 of 4)What are exponential equations?
Curved lines with an exponent.Example y = 2๐ฅ or f(x)= 2๐ฅ
y = B (๐ถ)๐ฅ
B = is the beginning and initial value (0,B) and where the graph crosses the y axis.
Page #11Lesson 6.3
x f(x)
0 1 BWhat is initial value when f(x)= 2๐ฅ ? B = 1
(0, 1)
.
Create a graph for y = 2๐ฅ
over the interval 0 โค x โค 3. x f(x)
0 1
1 2
2 4
3 8
Todayโs New Vocab (2 of 4)
Page #11Lesson 6.3
C = 2 Common (multiplier).
B
(2)(2)
Todayโs New Vocab (3 of 4)Does the function model growth or decay?
f(x) = (2)๐ฅ Growth. Why? C > 1The graph goes up.Page #11
Lesson 6.3
f(x) = (1
2)๐ฅ
Decay. Why? C < 1The graph goes down.
A multiplier of (1) keeps any number the same.
Todayโs New Vocab (4 of 4)If f(x) = (2)๐ฅ y = B (๐ถ)๐ฅ
What is f(3)?f(3) = 8
f(x) = (2)๐ฅ
f(3) = (2)3
f(3) = 8f(3) =(2)(2)(2)What is the common
multiplier? C = 2
Page #12Lesson 6.3
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
2,4,3,10,14
7,4,9,13,16
6,4,8,12,15
2,4,3,10,14
6,4,8,12,15
7,4,9,13,16
2,4,3,10,14
2,4,3,10,14
6,4,8,12,15
7,4,9,13,16
Page #9-10Lesson 6.3
Monday April 12, 2021 WPeriod
.
Linear means โStraight lineโ no exponentNot Linear mean โNot Straight Line or Curved lineโ
Create a table for f(x)= 4(1
2)๐ฅ
over the interval โ1 โค x โค 2.
x f(x)
-1 8
0 4
1 2
2 1
Is this a linear table/graph?
No, Why? The line curves.
Page #12Lesson 6.3
f(x) = ๐ฅ3 f(x) = 3๐ฅ
What is f(4) for function?Quadratic:
Number ExponentExponential:
Variable Exponent
f(4) = (4)3
f(4) = (4)(4)(4)
f(4) = 64
f(4) = (3)(3)(3)(3)f(4) = 3(4)
f(4) = 81
Monday April 12, 2021 Exit TicketPage #12 Lesson 6.3
Friday April 16, 2021 ActivatorHow are the two functions different?
k(x) = 2๐ฅ j(x) = 2xWhat is k(4) and j(4)?
x k(x)
4 16
x j(x)
4 8
k(4) = 2(4)
k(4) = (2)(2)(2)(2)
Linearj(4) = 2(4)j(4) = 8
NotLinear
Page #15Lesson 6.4
Todayโs Objective
Students will be able to evaluate and graph exponential functions.
Unit 6Lesson 4
Picture of the day Origin (0,0) in the center
Zoom out
Origin (0,0) in the corner
Zoom in
Todayโs New (1 of 4)The red line is linear and has NO exponent. The green line is exponential graph. It has an exponent.
Y = 2๐ฅโ8
Y = ๐ฅ
5
Page #15Lesson 6.4
Zoom in Graph
Todayโs New Vocab (2 of 4)
Evaluate j(x) = 16 โ 4๐ฅx j(x)
0 16
1 64
2 256
3 1024
When x = 3, what is j(3) ?
j(3) = 16 โ 4(3)
j(3) = 16 โ 4(4)(4)j(3) = 16โ 64j(3) = 1024Page #15
Lesson 6.4
Is the point (3,1024) on the line j(x) = 16 โ 4๐ฅ? Yes
Todayโs New Vocab (3 of 4)Evaluate k(x) = 16 โ
1
4
๐ฅ
x k(x)
0 16
1 4
2 1
When x = 2, what is k(2) ?
k(2) = 16 โ1
4
(2)
Page #15Lesson 6.4
k(2) = 16 โ1
4โ1
4
k(2) = 1
Todayโs New Vocab (4 of 4)Graph k(x) = 16 โ
1
4
๐ฅ
x k(x)
0 16
1 4
2 1
over the interval of 0 โค ๐ฅ โค 2
Page #15Lesson 6.4
The origin (0,0) is in
the corner. Zoom in.
Growth or Decay?
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
2,5,6,9
2,5,6,9
2,7,8,9
2,7,8,9
2,5,6,9
2,5,6,9
2,7,8,9
2,7,8,9
2,5,6,92,7,8,9
Page #13-14Lesson 6.4
#3 and #4 are
decimals answers.
.
Friday April 16, 2021 Work Period
Who is the most productive in hour 2 and 6?
Tom and SeanWhat is his productivity rate at those hours?
T(2) = 47 T(6) = 47S(2) = 25 S(6) = 75B(2) = 3 B(6) = 27
Page #16Lesson 6.4
47
75
27
3
Evaluate j(x) = 3 โ 5๐ฅ the function.
x j(x)
0 3
1 15
2 75
When x = 2, what is j(2) ?
j(2) = 3 โ 5(2)
j(2) = 3 โ 5(5)j(2) = 3โ 25j(2) = 75
Friday April 16, 2021 Exit TicketPage #16
Lesson 6.4
Tuesday April 20, 2021 Activator
2, 8, 14, ___, ___, ___, ___, ___๐0 ๐1 ๐2 ๐3 ๐4 ๐5 ๐6 ๐7
Given the following pattern. What is ๐ด7?+6 +6 +6
20 26 32 38 44
Is this an exponential pattern? NoWhy? There is repeated addition, not multiplication. Page #19
Lesson 6.5
Todayโs Objective
Students will be able to write recursive patterns given the function.
Unit 6Lesson 5
Todayโs New Vocab (1 of 4)
-7, 5, 17, 29, ๐0 ๐1 ๐2 ๐3
+12 +12 +12
Page #19Lesson 6.5
https://www.youtube.com/watch?v=v1ucHH06AxM 3min
If y = 12x โ 7, what is y when x = 3?y = 12(3) โ 7
y = 36 โ 7
y = 29
๐3 = 29
x Y
0 -7
1 5
2 17
3 29
Video
Todayโs New Vocab (2 of 4)Write the recursive pattern ๐ด๐+1 = ๐ด๐ โ 2
๐ด1 = 6
6, 4, 2, ___, ___, ___, ___, ___๐1 ๐2 ๐3 ๐4 ๐5 ๐6 ๐7 ๐8
-2 -2 -2
Is this pattern Linear? Yes, it is repeated subtraction.
Page #19Lesson 6.5
๐ด๐+1 = The next number
Todayโs New Vocab (3 of 4)
6, 4, 2, ___, ___, ___, ___, ___๐0 ๐1 ๐2 ๐3 ๐4 ๐5 ๐6 ๐7
Explicit formula
Y = MX + BY = -2x + 6
Recursive formula ๐ด๐+1 = ๐ด๐ โ 2
๐ด1 = 4๐ด0 = B = 6
0 -2 -4 -6 -8-2 -2 -2
Page #19Lesson 6.5
.
Todayโs Misconception (4 of 4)Write the recursive formula.
๐ด๐+1 = ๐ด๐ + 3๐ด0 = B = 2๐ด1 = 5
+3 +3
Page #20Lesson 6.5
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
1, 2, 3, 4
3, 4, 1, 2
1, 2, 3, 4
1, 2, 3, 4
1, 2, 3, 4
1, 2, 3, 43, 4, 1, 2
3, 4, 1, 2
3, 4, 1, 2
3, 4, 1, 2
Page #17-18Lesson 6.5
Tuesday April 20, 2021 Work Period
.
๐โ+1 = (2)๐โ๐0 = 4
Write the recursive formula.
h P(h)
0 4
1 8
2 16
0 32
Page #20Lesson 6.5
(2)
(2)(2)
๐0+1 = (2)๐0๐1 = (2)(4)
๐1 = 8
Write the recursive formula. What is ๐8?
-9, -6, -3, 0, 3, 6, 9, 12 ๐1 ๐2 ๐3 ๐4 ๐5 ๐6 ๐7
๐๐+1 = ๐๐ + 3๐1 = โ9
+3 +3 +3
Tuesday April 20, 2021 Exit Ticket
Page #20Lesson 6.5 ๐8 = 12
๐7+1 = ๐7 + 3๐8 = 9 + 3
๐8
Exponential
Linear
Linear or Exponential graph? Why?Friday April 23, 2021 Activator
Page #23Lesson 6.6
f(x) = โ1
2x -1 f(x) = 1(2๐ฅ)
Straight It has an Exponent.
Todayโs Objective
Students will be able to write the difference between linear and exponential word problems.
Unit 6Lesson 6
Todayโs New Vocab (1 of 4)
Is the situation linear or exponential?
x C(x)
0 100
1 110
2 120
3 130
A Goldโs gym membership costs $100 to sign-up and $10 dollars per month.
LinearWhy? Adds $10 per month
+10
+10
+10Explain C(0): The beginning cost
Page #23Lesson 6.6
Todayโs New Vocab (2 of 4)
x C(x)
0 100
1 110
2 120
3 130
Equation: y = mx + b
C(x) = $10x + $100
+10
Write an equation and function to model this situation.
Function: C(x) = mx + bM = $10 = the monthly payment
+10
+10
B = $100 = Beginning Sign-up Fee
Todayโs New Vocab (3 of 4)
x f(x)
0 100
1 200
2 400
3 800
Is the situation linear or exponential? You have discovered you have termites. Termites reproduce at a rapid pace. Some termite colonies can double in size monthly. You currently have
about 100 termites in your house.
Exponential Why? Repeated Multiplication
(2)(2)(2)
Todayโs New Vocab (4 of 4)
x f(x)
0 100
1 200
2 400
3 800
Equation: y = b(๐๐ฅ)
f(x) = 100(2๐ฅ)
(2)
Write an equation (function) to model this situation.
Function: f(x) = b(๐ถ)๐ฅ
C = (2) = Doubles (Times 2)
(2)(2)
B = 100 = Beginning Termites
Page #24Lesson 6.6
Todayโs New Vocab (3 of 4)
6, 4, 2, ___, ___, ___, ___, ___๐0 ๐1 ๐2 ๐3 ๐4 ๐5 ๐6 ๐7
Explicit formula
Y = MX + BY = -2x + 6
Recursive formula ๐ด๐+1 = ๐ด๐ โ 2
๐ด1 = 4๐ด0 = B = 6
0 -2 -4 -6 -8-2 -2 -2
Page #19Lesson 6.5
.
Todayโs Misconception (4 of 4)Write the recursive formula.
๐ด๐+1 = ๐ด๐ + 3๐ด0 = B = 2๐ด1 = 5
+3 +3
Page #20Lesson 6.5
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
1, 5, 6
1, 5, 6
1, 6, 5
1, 6, 5
1, 5, 6
1, 5, 6
1, 6, 5
1, 6, 5
1, 5, 61, 6, 5
Skip5D6E
Page #21-22Lesson 6.6
Friday April 23, 2021 Work Period
.
Last weekend, Emma sold lemonade at a yard sale. Emma earned money selling c cups. Sales were strong, so she raised the price from 50 cents to 75 cents per cup. She spent $9.96 on supplies each week. Write the function which represents her profit, P(c) for this last weekend and this weekend.
P(c)= $0.50c - 9.96 last weekend
P(c)= $0.75c - 9.96 this weekend
+$0.25C
Let c = The number of cups
Page #24Lesson 6.6
Friday April 23, 2021 Exit Ticket Emma sold 80 cups of lemonade each weekend, how much money did she make selling lemonade each week?
P(c) = $0.50c - 9.96 P(c) = $0.75c - 9.96P(80) = $0.50(80)-9.96
P(80) = $40 - 9.96
P(80) = $30.04
P(80) = $0.75(80) - 9.96
P(80) = $60- 9.96
P(80) = $50.04
Last weekend This weekend
Tuesday April 27, 2021 Activator
x y
-2 1
-1 2
0 4
1 8
Given this table, what is the beginning Value (B-value)? B = 4 (2)
(2)(2)
Is this a linear or exponential graph? ExponentialWhy? Repeated Multiplication
Page #27Lesson 6.7
Todayโs Objective
Students will be able to write exponential equations and functions.
Unit 6Lesson 7
x f(x)
-1 2
0 4
1 8
2 16
Given this table, write a function.
C = ๐ด2
๐ด1=
16
8= (2) (2)
(2)(2)
F(x) = b(๐ถ)๐ฅ
f(x) = 4(2)๐ฅ
Todayโs New Vocab (1 of 4)Page #27
Lesson 6.7
Todayโs New Vocab (2 of 4)
x F(x)
0 4
1 8
2 16
3 32
Write the exponential function.Evaluate for F(3).
F(x) = B (๐ถ)๐ฅB = 4C = (2)
F(x) = 4 (2)๐ฅ
F(3) = 4 (2)3
F(3) = 4(2)(2)(2)F(3) = 32
Page #27Lesson 6.7
Todayโs New Vocab (3 of 4)Graph the function. F(x) = 4 (2)๐ฅ
x F(x)
-2 1
-1 2
0 4
1 8
Is this exponential growth or
decay?Growth Why?
(4 of 4) Make a table, and write an equation.
x y
0 100
1 50
2 25
3 12.5
y = B (๐ถ)๐ฅ
y = 100 (1
2)๐ฅ
Growth? Decay?
C = ๐ด2
๐ด1=
25
50= (
1
2)
(1
2)
(1
2)
Group Work Questions
#1#2#3#4#5
#6#7#8#9
#10
1, 4, 8
2, 4, 8
6, 4, 8
2, 4, 8
1, 4, 8
6, 4, 81, 4, 8
6, 4, 8
2, 4, 8
1, 4, 8
#5, #3 have decimal B
values
#7 ๐ด2 ๐๐ ๐๐๐๐๐๐๐๐.
Page #25-26Lesson 6.7
Tuesday April 27, 2021 Work Period
.
The manufactures of Hess toys cost of $125 to designand $5.25 manufacture each toy. If the cost of manufacturing t toys, write the function.
C(t) = 5.25t + 125
Linear or exponential? Linear b/c addition $5.25y = mx + b
C(t) = mt + bPage #28
Lesson 6.7
Tuesday April 27, 2021 Exit Ticket
.
The Hess company wants to know how much it will cost to manufacture 250 toys.
c(t) = $5.25t + $125c(250) = $5.25(250) + $125
c(250) = $1437.50c(250) = $1312.50 + $125
It will cost $1437.50 to manufacture 250 toys.
Monday Activator Page #30
Unit 6 Review
88
100= 0.88
C < 1 This graph is decreasing.
#6
Todayโs Objective
Students will be able to review all objectives from Unit 6.
Unit 6Review
Todayโs New Vocab (1 of 4)
Page #29Unit 6 Review
#4Growth or decay?
Todayโs(2 of 4)
Page #31Unit 6 Review
Simplify
#10
Todayโs New Vocab (3 of 4)#17 What is the 9th term?3, 12, 48, ___, ___, ___, _____, ๐0 ๐1 ๐2 ๐3 ๐4 ๐5 ๐6
C = ๐ด2
๐ด1=
48
12= (4)
____, _____, _______, ๐7 ๐8 ๐9
192 768 3072 12288
49152 196608 786432
#18 What is
the pattern?
.
New Vocab (4 of 4)#15: Increasing or decreasing? decreasing
Why? C < 1 Multiplier is Less than 1
Page #32Unit 6 Review
t P(t)
11
GWQโs Skip #7
#1#2#3#4#5
#6#7#8#9#10
1, 12, 5, 14
2, 3, 9, 141, 12, 5, 14
1, 12, 5, 14
1, 12, 5, 14
1, 12, 5, 142, 3, 9, 14
2, 3, 9, 142, 3, 9, 14
2, 3, 9, 14
Page #29-32Unit 6 Review
Monday Exit TicketPage #30
Unit 6 Review#7Determine the 3rd term in the pattern 28, 112, ____.How do you calculate the common multiplier?
๐ด1 ๐ด2 ๐ด3
C = ๐ด2
๐ด1=
112
28= (4)
4 4448
x A(x)
1 28
2 112
3 4484
Wednesday Activator โข Please take out your Homeworkโข Please take out your Classworkโข Unit #6 Test: All Questions 5% โข No work needed on #2, #4, #11โข Extra Credit project next class (Add 5%)โข You must receive at least a 65%, or you
must stay after school to complete it.โข Extended Time: Thur 7:45-8:30, Mon 2:45-3:45โข must pass by the end of Q3 Friday, April 17th
Determine if the table is linear or exponential.
Linear Repeated Addition Repeated Multiplication
Exponential
+2+2+2+2
(2)
(2)
(2)
(2)