Final Exam Review

Expressions

100

The sum of four and a number

4 + n

200

The product of eight and x

8x

300

Write a verbal expression for:

3x - 2

*Answers vary

The product of three and x minus two

Three times x minus two

400

A number decreased by 7

n - 7

500

The quotient of a number and 2 increased by 5

n/2 + 5

Simplify

100

4² + 2 - 8

10

200

3(x + 8)

3x +24

300

-6w + 5w

-1w

400

2(x +9) -5x

-3x +18

500

2x +6(2x +7)

14x + 42

Slope

100

Find the slope.

(1, 3) (3, 1)

-1

200

(5, 1) (-1, 3)

-1/3

300

Name the parallel slope.  

m = 9

9

400

Name the perpendicular slope. 

m = 7

-1/7

500

Name the parallel and perpendicular slope. 

m = 10

parallel: 10

perpendicular: -1/10

Solve

100

x - 2 = 8

x = 10

200

5x = 35

x = 7

300

|a - 5| = 1

a = 6 and a =4

400

x +9 > 3

x > -6

500

2x - 6 = 12

x = 9

Formulas

100

What is the slope formula?

m = y₂ - y₁/ x₂ - x₁

200

What is the direct variation formula? 

y = mx or y = kx

300

What is the slope intercept form?

y = mx + b

400

What is the point slope form? 

y - y₁ = m(x - x₁)

500

Write in y = mx + b

y - 2 = 3(x - 4)

y = 3x -10