Linear Functions

Front

Is this graph linear or nonlinear?

Back

Linear

Front

Does this graph represent a positive or negative slope?

Back

Positive

Front

The change in rise over run in a graph is called the...

Back

slope

Front

The location where the line crosses the y-axis is called the...

Back

y-intercept

Front

Which set of values is a function? (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1)

Front

What is the formula for a linear function?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope of a line represent?

Back

The rate of change of y with respect to x.

Front

If a line has a slope of 0, what does that indicate?

Back

The line is horizontal.

Front

If a line has an undefined slope, what does that indicate?

Back

The line is vertical.

Front

What is the x-intercept of a line?

Back

The point where the line crosses the x-axis.