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8th Grade Math Vocabulary
8th Grade Math
8th Grade Graphing
Rate of Change
Math Potpourri
200

Initial value, where the line crosses the y-axis, starting point

What is the y-intercept?

200

0.0000342 written in scientific notation.

What is 3.42 x 105?

200

The graph of x = 5 looks like this when graphed on a coordinate plane.

What is a vertical line?

200
y-intercept of y=3x-8
What is -8
200

If a line is parallel to another, it has _____ slope

...the same slope.

400

Longest side of a right triangle, opposite the right angles, always c. 

What is the Hypotenuse?

400

The three steps to finding a slope-intercept form equation.

1. Find m

2. Find b

3. Write your equation.

400
Slope of the line that passes through (2,6) and (4,6).
What is m=o
400

Slope of y=-3/4x + 6

What is m=-3/4

400

If you solve an equation has infinitely many solutions, what would a solution look like?

x=x

6=6

Same on both sides

600

Also known as the opposite operation, used to move a term from one side of the equals sign to the other.

What are inverse operations?

600

Two parts: 

1. When two lines are graphed on the same coordinate plane.

2. When the two lines appear to be graphed on top of one another.

What is system of equations?

What is "infinitely many solutions"?

600

The slope formula.

What is m = (y2 - y1)/(x2 - x1)

600

The process of finding the length of the height of a cylinder after being given the volume and radius of the cylinder.

What is backwards volume?

600

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

What are irrational numbers?

800

This type of relation maps one x value to exactly one y value.

What is a function?

800

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

x = -2

800

A 180 degree rotation of a shape graphed in Quadrant III of a coordinate plane will be mapped to this new quadrant.

What is quadrant I?

800

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

What is -2.

800

The only type of transformation that makes the new image not congruent to the original.

What is a dilation?

1000

Percent of Change formula

(old-new)/old

1000

Simplify the expression: (22)3 x 2-6

What is 1?

1000

The 3 types of correlations for a scatterplot.

What is...

positive, negative no correlation


1000

Write an equation in slope intercept form that passes through point (1, 8) and has a slope of 5.

y = 5x + 3

1000

This is a branch of mathematics that deals with abstract systems and the manipulation of expressions within those systems

What is Algebra