Finding Slope

Front

What is the formula to find the slope between two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

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

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

The line falls from left to right.

Front

Find the slope: (2, 3) (4, 7)

Back

Slope = (7 - 3) / (4 - 2) = 4/2 = 2

Front

Find the slope: (1, 2) (3, 6)

Back

Slope = (6 - 2) / (3 - 1) = 4/2 = 2

Front

What is the slope of a line that is perfectly vertical?

Back

The slope is undefined.

Front

What is the slope of a line that is perfectly horizontal?

Back

The slope is 0.

Front

If a line has a slope of -3, what does this mean in terms of rise and run?

Back

For every 3 units down (rise), the line moves 1 unit to the right (run).