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

Find the slope of the line that passes through the points (6, -6) and (-4, 0).

Back

-3/5

Front

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

Back

-1

Front

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

Back

1

Front

Find the slope of the line that passes through the points (1, -2) and (-2, 7).

Back

-3

Front

Find the slope of the line that passes through the points (13, 0) and (9, -4).

Back

1

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 of a line is zero?

Back

The line is horizontal.

Front

What does it mean if the slope is undefined?

Back

The line is vertical.