Slope: Given Two points

Front

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

Back

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

Find the slope of the line that passes through (2, 3) and (4, 7).

Back

m = 2

Front

Find the slope of the line that passes through (1, 2) and (1, 5).

Back

undefined

Front

If the slope of a line is negative, what does that indicate about the direction of the line?

Back

It indicates that the line is decreasing from left to right.

Front

If the slope of a line is positive, what does that indicate about the direction of the line?

Back

It indicates that the line is increasing from left to right.

Front

Find the slope of the line that passes through (-1, -1) and (2, 2).

Back

m = 1

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.