Slope formula

Front

What is the slope formula?

Back

The slope formula is m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on a line.

Front

Find the slope given the points (3,18) and (0,18).

Back

0

Front

Find the slope given the points (2, −7) and (−1, 6).

Back

-13/3

Front

What is the slope of the line that passes through the points (-4, -1) and (-2, -5)?

Back

-2

Front

Find the slope between the two points (2, 7) and (5, 8).

Back

1/3

Front

What does a slope of 0 indicate about a line?

Back

A slope of 0 indicates that the line is horizontal.

Front

What does an undefined slope indicate about a line?

Back

An undefined slope indicates that the line is vertical.

Front

If the slope of a line is positive, what does that tell you about the line's direction?

Back

A positive slope indicates that the line rises from left to right.

Front

If the slope of a line is negative, what does that tell you about the line's direction?

Back

A negative slope indicates that the line falls from left to right.

Front

How do you determine the slope from a graph?

Back

To determine the slope from a graph, select two points on the line, find the rise (change in y) and run (change in x), and use the formula m = rise/run.