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

Calculate the slope of the line passing through the points (1, 2) and (3, 6).

Back

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

Front

If a line has a slope of -1, what does this tell you about the line's direction?

Back

The line decreases from left to right.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

Find the slope of the line that passes through the points (2, 3) and (2, 5).

Back

Slope = (5 - 3) / (2 - 2) = 2 / 0 = undefined

Front

If the slope of a line is positive, what can you say about the line's direction?

Back

The line increases from left to right.

Front

What is the slope of the line that passes through the points (4, 2) and (6, 2)?

Back

Slope = (2 - 2) / (6 - 4) = 0 / 2 = 0