8th Grade Math Review

Slope and Functions?

100

Find the slope given two points: (2,4) and (5,7).

What is 3/3 or 1.

200

Is the following set of ordered pairs a function:

{(1, -2), (2, -1), (3, 5), (4, 3)}

Function

300

Find the slope in this equation: Y= 4X+7

What is 4.

400

A group of students are timed while sprinting 100 meters. Are the results a function?

{(100, 15.1), (100, 13.8), (100, 14.2), (100, 13.8)}

Not a Function

500

Two flags are being raised. Which one has a greater starting height?

A: h=16+2t

B: h=8+4t

Flag A

Equations

100

The Value of X in 3X+8=23

What is 5?

200

The value of X in 6X+4X=40

What is 4?

300

Solve for x: –3x + 12 = 9x

x=1

400

Solve for x: 12x + 3 = 3 (5x + 9)

x=-8

500

One, none, or infinite solution: 2x + 6 = 2(x + 3)

Infinite Solutions

Vocabulary

100

The transformation that keeps the shape but changes size.

Dilation

200

Means Rate of Change

What is Slope?

300

A letter that represents a Number in an equation.

What is a variable?

400

The formula we can use for right triangles.

Pythagorean Theorem: a squared plus b squared equals c squared.

500

The four sections of a graph that are created by the axes.

What is a quadrant?

Scientific Notation and Exponents

100

Convert to Scientific Notation: 26,870

What is 2.687 x 10⁴ ?

200

Convert to Scientific Notation: 0.075

What is 7.5 x 10^-2 ?

300

Convert to Standard Notation: 7.96 x 10^-3

.00796

400

Simplify 8² * 8⁴

8⁶

500

Which is larger: 67,000 or 6.7 x 10 to the 3rd power

What is 67,000?

On a Graph/Volume

100

The X-Coordinate of point S(0,7)

What is 0?

200

Point T (2,-8) is located in which quadrant.

What is Quadrant IV?

300

The ratio (fraction) which represents slope in words.

What is rise over run?

400

Do the following sides make a right triangle?

5, 7, 12

Prove your choice with the supporting math.

What is no (25 + 49 does not = 144)?

500

Slope of a vertical line.

What is no slope or undefined?