8th Grade Math

8th Grade Math

Equations

Equations

8th Grade Graphing

Functions Math

Miscellaneous

100

Solve: 3 + a = 10

a = 7

100

Slope

Rise/Run

Change in y/Change in x

y2-y1/x2-x1

100

Slope intercept form of a linear equation.

y=mx + b

100

Slope of y=2x-4

What is m=2

100

Linear or Nonlinear

y = 3x - 5^{2}

Linear

200

Solve: 6 = y - 3

y = 9

200

Slope-Intercept Form

y = mx + b

200

The point where the line crosses the y-axis.

y-intercept

200

y-intercept of y=3x-8

What is -8

200

Function or Not a Function

(1, 7), (3, 8), (3, 6), (6, 5), (2, 11), (1, 4)

Not a function

300

Solve: 4 + 2c = 8

c = 2

300

Pythagorean Theorem

a^{2 }+ b^{2 }= c^{2}

300

The measure of a line's steepness

slope

300

In the equation y = 3x + 7, where we are comparing cost, y-variable, and time, x-variable, what does the 3 represent in the situation?

(the units)

Slope or cost over time

300

True or false: This is a rational number

square root 2 34

What is false.

400

Solve: 15 = 3d-3

d = 6

400

Volume of a Cylinder, Cone, and Sphere

Cylinder -> V = pi*r^{2}*h

Cone -> V = (1/3)pi*r^{2}*h

Sphere -> V = (4/3)pi*r^{3}

400

How to graph y=2/5x+4

Plotting the y-intercept at (0,4) and use the slope to find additional points on the line.

400

In a situation where a fountain is filled with water over time, what does the y-intercept represent?

The starting amount of water.

400

Numbers that include radicals that are NOT perfect squares...and pi

What are irrational numbers?

500

Solve: -3(x+5) = 2x-5

x = -2

500

Triangle Sum Theorem (Interior angles of a triangle.)

m<A + m<B = m<C

500

Steve bikes to his home from school, stopping twice due to traffic, before getting home. Describe a graph of his journey in the distance from his home over time.

decrease, constant, decrease, constant, decrease

500

Find the slope of the line passing through the following points: (-4, 0) and (-3, -2).

What is -2.

500

Linear or Nonlinear?

x | 1 | 2 | 3 | 4

y | 5 | 10 | 15 | 20

Nonlinear