Topic 4 Review

Vocabulary

100

A letter used to represent a number

Variable

200

Contains numbers, variables, and one or more operations

Algebraic Expression

300

A number attached to (in front of) a variable

Coefficient

400

A term without a variable

Constant

500

Parts of an expression separated by a plus or minus sign

Terms

Simplify

100

-12x - 8x

-20x

200

7y - 13y + 11

-6y + 11

300

-19p + 10 - 19p + - 15

-38p - 5

400

9(x - 8) + 3(4)

9x - 60

500

1/2x - 17 + 3/4 + 12

5/4x - 5

Distribute

100

-3(x + 4)

-3x - 12

200

7(2x - 11)

14x - 77

300

-(x - 7) + 20

-x + 27

400

-2(-9x + 5) - 8

18x - 18

500

1/4(24x - 8y + 4)

6x - 2y + 1

Evaluate

100

If x = -2 and y = 4, evaluate:

2x - y

-8

200

If m = 3 and n = -2, evaluate:

9m - n

29

300

If c = -5 and d = -1, evaluate:

10c - 8d + 12

-30

400

If x = 3, y = -4 and z = -2, evaluate:

-3x + 6y + z

-35

500

If k = -1/2 and j = -8, evaluate:

12k + 1/4j - 10 - 9

-27

Add & Subtract

100

(x + 9) + (-2x - 8)

-3x + 1

200

(10x - 9) + (-11x - 16)

-x - 25

300

3(x + 4) + (-9x - 13)

-6x - 1

400

(6x - 17) - (4x + 22)

2x - 39

500

7(2x - 8) -3(6x + 1)

-4x - 39