Algebra and Linear Relations Review

2-Step Equations

100

2x + 1 = 15

x = 7

200

-3x + 5 = 23

x = -6

300

3 + 4x = -13

x = -4

400

6 - 2x = 10

x = -2

500

-17 = -5 - 4x

x = 3

Distributive Property

100

2(x+5) = 12

x = 1

200

4(x-1) = 16

x = 5

300

-3(x+3) = 15

x = -8

400

10 = -2(x-7)

x = 2

500

-4(-2 - x) = -20

x = -7

Linear Relations

100

How do you describe a graph?

State the change in the x-value, and the change in the y-value

200

In an ordered pair, what value is always stated first.

x-value

300

In an ordered pair, which value is always stated second.

y-value

400

Create a table of values for the relation y=2x+3 with the input variables -2, -1, 0, 1, 2

See board.

500

Graph the linear relation y=3x+1 for the input variables -2, -1, 0, 1, 2.

See board.

Vocabulary

100

A graph where the points can be connected

Continuous Data

200

A graph where the points cannot be connected.

Discrete Data

300

Which variable is independent?

The x-variable or input variable

400

Which variable is dependent?

The y-variable or output variable

500

How you know a relation is linear?

When you graph it, it makes a straight line

Grade 8 Review

100

(+3)(+6)

(+18)

200

(-4)(+7)

(-28)

300

2/3 x 9/14

3/7

400

3/5 divided by 7/15

1 2/7

500

1 2/3 divided by 2 1/4

20/27