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Substitution of Variables
Substitution Again!
Like Terms
What's the Slope?
Mrs. Carrie and Ms. Butler's Choice
100

Simplify the expression by substituting:

x-3 when x=6

3

100

What operation do you use when you distribute?

Multiplication 

100

Are these like terms?

3x and 7x

Yes

100

y= 5x+5

m=5

100

3(x+2)

x= 5

21

200

Simplify the expression by substituting:

2x+4 when x=3

10

200

Use the distributive property:

2(x+1)

2x+2
200

Are these like terms?

2ab, 3ab and 5ab

Yes

200

y= 2x+7

m= 2

200

8x-16

x=2

0

300

Simplify the expression by substituting:

3x-x when x=4

8

300

Use the distributive property:

4(a+2)

4a+8

300

Are these like terms?

2x2 and 2x

No

300

y= -3x+12

m= -3

300

Who are your favorite math teachers?

Mrs. Carrie and Ms. Butler

400

Simplify the expression by substituting 


x2 when x=3

 

9

400

Use the distributive property:

-3(2x-2)

-6x+6

400

Combine the like terms

3x + 8 - 2x +2

x+10

400

y= (1/2)x-6

m= 1/2

400

5x+3y+2

x= 2

y=3

21

500

Simplify the expression by substituting

x2+3 when x=4

19

500

Use the distributive property:

-5(3x+3)

-15x-15

500

Combine the like terms

3z+4y+5z+6y+9

8z+10y+9

500

(2, 6) (6, 18)

m= 3

500

5x2+3 when x=-3

48