Slope

Front

What is the slope of a vertical line?

Back

Undefined

Front

What is the slope of a horizontal line?

Back

Zero

Front

How do you calculate the slope between two points (x1, y1) and (x2, y2)?

Back

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

Front

What does a positive slope indicate about a line?

Back

The line rises from left to right.

Front

What does a negative slope indicate about a line?

Back

The line falls from left to right.

Front

What is the slope of the line that passes through the points (2, 3) and (5, 11)?

Back

Slope = (11 - 3) / (5 - 2) = 8/3

Front

What is the slope of the line that passes through the points (-1, -2) and (3, 2)?

Back

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

Front

If a line has a slope of 3, what is the rise over run?

Back

Rise = 3, Run = 1 (3/1) or simply 3.

Front

What is the slope of the line that passes through the points (0, 0) and (4, 8)?

Back

Slope = (8 - 0) / (4 - 0) = 2

Front

What is the slope of the line that passes through the points (10, -8) and (1, 12)?

Back

Slope = (12 - (-8)) / (1 - 10) = 20 / -9 = -20/9