Retake Calculating Slope from Ordered Pairs

Front

What is the formula to calculate 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 (2, 4) and (6, 12).

Back

2

Front

Find the slope of the line that passes through the points (-2, 8) and (0, 8).

Back

0

Front

Find the slope of the line that passes through the points (19, -2) and (-11, 10).

Back

-2/5

Front

Find the slope of the line that passes through the points (-4, 7) and (-6, -4).

Back

11/2

Front

Find the slope of the line that passes through the points (-1, 5) and (0, -9).

Back

-14

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

If the slope of a line is undefined, what does that mean about the line?

Back

The line is vertical.