8th Grade Math Vocab Review

Slope

100

Slope shows the ___ and ___ of a line. 

Steepness and Flatness

200

To find the slope on a graph, use _____ over _____.

rise over run

300

Slope is the change in ____ over the change in ____.

change in y / change in x

400

The slope formula when given the 2 ordered pairs

(y_{2 -} y₁) / (x₂ - x₁)

500

The letter that represents the slope in y=mx+b

m=slope

Types of Slope

100

A line that points to the left

Negative

200

A line that points to the right

Positive

300

A line that is flat and has a slope of 0.

horizontal or y=#

400

A line that has an undefined slope

vertical line or x=#

500

The only type of line that is NOT a function

vertical or x=#

Relations

100

An ordered pair is called this? 

relation

200

T or F

All functions are relations

True

300

True or False

All relations are functions

False; can have duplicate x values

400

DAILY DOUBLE:  These are the 3 words used to describe x values

input, independent variable, domain

500

These are the 3 words to describe the y value

output, dependent variable, range

Functions

100

A function that creates a straight line when graphed is called?

Linear function

200

A function can not have duplicate what?

x values or input or domain or independent variable

300

diagram that depicts the x and y values arranged in an oval shape with arrows connecting the ordered pairs.

mapping diagram

400

Name the test that you can use to determine if a function by drawing a line through it.

vertical line test

500

f(x) means or stands for

y

Mystery

100

Negative plus Negative is

Negative

200

Pi is what type of real #?

Irrational

300

DAILY DOUBLE: Like terms means ....

same variable

same exponent

400

With scientific notation, a negative exponent means ...

a real small number

500

What is the slope intercept formula?

y = mx + b