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Solving Equations
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October 28, 2015
Oct 1612:40 PM
ALGEBRA TERMINOLOGYDIRECTIONS: PLACE THE TERM IN THE CORRECT SECTION.
Monomial Binomial Trinomial Polynomial Constant2x + 3
7x28
9x2 + 4x 710
10 8y
3y2 7y 3
9y3
4x + 8y 2z 9
2x + 3y
2x + 3
7x2
9y3
3y2 7y 3
9x2 + 4x 7
8 8
2x + 3y10
10 8y 10
10 8y
w2.4
4x5g2
Oct 179:18 AM
EVALUATING EXPRESSIONSVariable A variable is an unknown. The value of analgebraic expression varies or changes depending on the value of the variable.
What is the value of the expression 5x2 + 3?
Oct 179:23 AM
Don't forget to follow order of operations when evaluating. Substitute the following x values and see how th expression changes. x = 2, x = 1, x = 10, x = 4
5x2 + 3 =5( )2 + 3 =
5x2 + 3 =5( )2 + 3 =
5x2 + 3 =5( )2 + 3 =
5x2 + 3 =5( )2 + 3 =
Oct 1912:42 PM
SOLVING ONESTEP EQUATIONS
Solving Equations
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October 28, 2015
Oct 192:18 PM
1. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
2. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
3. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
4. Solve the following equations for x algebraically. Check each solution.
Check
Solving Equations
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October 28, 2015
Oct 192:18 PM
5. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
6. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
7. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
8. Solve the following equations for x algebraically. Check each solution.
Check
Solving Equations
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October 28, 2015
Oct 192:18 PM
9. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
10. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
11. Solve the following equations for x algebraically. Check each solution.
Check
Oct 271:28 PM
Solving Equations
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October 28, 2015
Oct 192:18 PM
12. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
13. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
14. Solve the following equations for x algebraically. Check each solution.
Check
Oct 192:18 PM
15. Solve the following equations for x algebraically. Check each solution.
Check
Solving Equations
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October 28, 2015
Oct 179:30 AM
Solving Algebraic EquationsHannah and Harold were asked to solve the equation x + 4 = 7.Who do you think is correct? Hannah? Harold? Both? Neither?Explain your reasoning.
Hannah
x + 4 = 7 4 4
x = 3
Harold
x + 4 = 7 1 1x + 3 = 6 8 8x 5 = 2 + 5 + 5
x = 3
Feb 48:16 AM
Oct 201:02 PM
Solving Word Problems by Writing Legends and Writing and Solving
Algebraic Equations
We will be creating legends that will help us create equations to solve word problems. Legends include let statements that let the reading know what the unknown variable represents.
For example:
Let x = the number of students who went on the field trip.
Oct 201:02 PM
Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.
Sally has 7 more dolls than Mary. Sally has 48 dolls. How many dolls does Mary have?
Solving Equations
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October 28, 2015
Oct 201:02 PM
Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.
Betsy’s bedroom is in the shape of a square. The area of her room is 225 ft2. She would like to install crown molding around the perimeter of her room. What is the length of each side?
How many feet of molding does she need to buy?
Oct 201:25 PM
Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.
Paul took 5 skittles from his sister’s bag of skittles. She ended up with 52 skittles. How many did his sister start with?
Oct 201:25 PM
Matt has agreed to paint 3 houses. If he knows that he can paint of a house in one day, how many days will it take him to paint all 3 houses?
Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.