Algebra Rate of Change

Which of the following are ways to find the rate of change?

• change in y over change in x

• rise over run

• subtract y coordinates over subtract x coordinates

• all of the above

Find the slope of the line that passes through
(10, -8) and (1, 12).

• 20/9

• -20/9

• 4/9

• 9/4

• $2.86

• $3.00

• $20.00

• $10.00

• $15,000

• $20,000

• $25,000

• $60,000

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• 5

• -1.43

• 0.7

• -0.2