Finding Slope

Front

What is the formula to find the slope of a line 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

A positive slope indicates that as x increases, y also increases.

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that as x increases, y decreases.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is zero.

Front

Find the slope of the line that passes through the points (1, 2) and (3, 6).

Back

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

Front

Find the slope of the line that passes through the points (0, 0) and (4, 8).

Back

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

Front

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

Back

For every 3 units of rise, there is a 1 unit run.

Front

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

Back

The slope is undefined because the x-coordinates are the same.

Front

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

Back

The slope is 0 because the y-coordinates are the same.