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Unit 1a review of basic algebra.notebook
1
September 20, 2016
May 101:44 PM
WU 1.7
Solving Inequalities
AGENDA Lesson 1.9
1) HW out!
2) Complete WU 1.8
3) Review HW
4) Review WU 1.7
5) Today Inequalities
Objectives for today's lesson:• Recognize and solve an
inequality.
(2, ∞)(∞. 3]
[1, ∞)(∞, 0)x < 0[2, ∞)
(2, 3](2, 2)
x ≥ 2
2 < x < 2
2 < x ≤ 0
x < 4
∞ < x < ∞
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May 1012:48 PM
Students will be able to recognize and solve an inequality.
Is this an expression or equation?
‐3x > 9
Neither!!! It's an inequality.
Can you solve this inequality?
Unit 1a review of basic algebra.notebook
2
September 20, 2016
May 1012:48 PM
‐3x > 9
x > ‐3
Let's check your answer. Pick a number
greater than ‐3 and substitute it in and see if it works.
Students will be able to recognize and solve an inequality.
Is this inequality
solved correctly
?
May 1012:48 PM
When you multiply or divide by a negative number, you MUST switch the
inequality symbol.
‐3x > 9
x < ‐3
Notice the inequaltiy symbol has changed direction.
Students will be able to recognize and solve an inequality.
Unit 1a review of basic algebra.notebook
3
September 20, 2016
May 1012:48 PM
Students will be able to recognize and solve an inequality.
6x + 8 > 2Solve the following inequality:
Can you explain what your
answer means?
May 1012:48 PM
Solve the following inequality and write your answer interval notation:
Can you explain what your
answer means?
9 > 10 + 8x
Students will be able to recognize and solve an inequality.
Unit 1a review of basic algebra.notebook
4
September 20, 2016
May 1012:48 PM
Students will be able to recognize and solve an inequality.
2 > 6x + 7
Solve the following inequality and write your answer interval notation:
May 1012:48 PM
Let's try to solve an inequality and write the answer using interval notation.
Students will be able to write the answer to an inequaltiy in interval notation.
Unit 1a review of basic algebra.notebook
5
September 20, 2016
May 1012:48 PM
Students will be able to write the answer to an inequaltiy in interval notation.
Solve the following inequalities and write your answer in interval notation.
May 1012:48 PM
Let's try to solve an inequality and write the answer using interval notation.
10x - 7 > 4x + 35
Students will be able to write the answer to an inequaltiy in interval notation.
Unit 1a review of basic algebra.notebook
6
September 20, 2016
May 1012:48 PM
Let's try to solve an inequality and write the answer in interval notation.
Students will be able to write the answer to an inequaltiy in interval notation.
May 1012:48 PM
Solve the following inequality and write your answer in interval notation.
-4(x - 2) > -3(x + 1)
Students will be able to write the answer to an inequaltiy in interval notation.
Unit 1a review of basic algebra.notebook
7
September 20, 2016
May 101:47 PM
Express each interval as an inequality using x as a variable.
Express the inequality in Interval NotationHW: 1-15
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May 101:47 PM
HW: 1-159)
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