Linear Functions and Their Characteristics

Front

Linear

Back

Something that forms a straight line when graphed

Front

Variable

Back

A symbol, often a letter, that represents an unknown quantity in mathematical expressions and equations.

Front

Slope

Back

A number that describes how steep a line is. It tells you how much a line goes up or down as you move to the right.

Front

y-intercept

Back

The point where a graph crosses the y-axis. It happens when x=0.

Front

x-intercept

Back

The point where a graph crosses the x-axis. It happens when y=0. Also known as a ZERO.

Front

Symbol for slope

Back

m

Front

Symbol for the y-intercept

Back

b

Front

Key features of linear functions on a graph

Back

1. Slope 2. Y-intercept 3. X-intercept

Front

Axis for the y-intercept

Back

The y-axis or the vertical axis

Front

Axis for the x-intercept

Back

The x-axis or the horizontal axis