Finding Slope From Two Points

Front

What is the formula to find 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

The line is horizontal.

Front

What does a positive slope indicate about the direction of a line?

Back

The line rises from left to right.

Front

What does a negative slope indicate about the direction of a line?

Back

The line falls from left to right.

Front

What is the slope of a vertical line?

Back

Undefined.

Front

If the coordinates of two points are (3, 5) and (3, 10), what is the slope?

Back

Undefined.

Front

Find the slope of the line that passes through the points (1, 2) and (4, 5).

Back

m = (5 - 2) / (4 - 1) = 1.

Front

If the slope of a line is -2, what does this tell you about the line?

Back

The line falls steeply from left to right.

Front

What is the slope of the line that passes through the points (0, 0) and (2, 4)?

Back

m = (4 - 0) / (2 - 0) = 2.

Front

How do you interpret a slope of 1/4?

Back

For every 4 units you move horizontally, you move up 1 unit.