Chapter 3 Review

Combining Like Terms

100

3 + 7x + 2x

3 + 9x

200

2p + 8p - p + 4

9p + 4

300

2.5x + 3x - 18 + 12

5.5x - 6

400

12y - 2y + 8x + x - 4

10y + 9x - 4

500

5.5k + 1.5 + 3 - k + b - 2k

2.5k + b + 4.5

Solving for X/Substitution

100

3x = 9

x = 3

200

4x + 3 = 7

x = 1

300

y - 10 = -5

y=5

400

2y + y - 1       if y = –7

2(-7)+(-7)-1 = -22

500

(6 - p)(6 - p)       if p = 0

(6-0)(6-0) = 36

Slope-Intercept

100

Slope is also known as...

Growth

200

Slope is always written as....

Rise over Run

300

What is the form for slope/intercept?

Y = mx + b

400

What is the slope in the rule...

y = 2x - 6

2

500

If your slope is 2/3, define the rise and the run, and state the direction.

Rise: 2 up

Run: 3 right

Computations

100

Solve: 5 - 2 · 3²

-13

200

Solve: (3-5)(6+2)

-16

300

Solve: 24 · (1/4) / -2

-3

400

Solve: 5 - (3 - 17)(-2 + 25)

327

500

Solve: -1.5 - 2.25 - ( -4.5)

0.75

Miscellaneous

100

If a graph has an upward trend, what is the correlation?

Positive Correlation

200

How many points on a graph must you plot before drawing your line?

Three

300

Define a solution

A solution is a value for the variable that makes an equation true.

400

How many kinds of solutions are there? What are they?

Three kinds: One Solution, No Solution, Infinite (All) Solutions

500

Define y-intercept

The y-intercept is where your line crosses the y-axis.