Finding Slope

Front

What is the formula to find the slope of a line passing through 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 the line rises as it moves from left to right.

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that the line falls as it moves 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 passing through (5, 15) and (6, 5).

Back

-10

Front

Find the slope of the line passing through (-8, -8) and (-1, -3).

Back

5/7

Front

Find the slope of the line passing through (10, 1) and (5, 2).

Back

-1/5

Front

What does it mean if the slope is zero?

Back

It means the line is horizontal and does not rise or fall.

Front

How do you interpret a slope of -4?

Back

It means for every 1 unit increase in x, y decreases by 4 units.