Finding slope given 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 it mean if the slope of a line is positive?

Back

The line rises from left to right.

Front

What does it mean if the slope of a line is negative?

Back

The line falls from left to right.

Front

What does it mean if the slope is zero?

Back

The line is horizontal.

Front

What does it mean if the slope is undefined?

Back

The line is vertical.

Front

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

Back

1

Front

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

Back

2

Front

Find the slope of the line through the points (-1, 2) and (3, 5).

Back

3/4

Front

Find the slope of the line through the points (0, 0) and (0, 5).

Back

no slope (undefined)