McGraw Hill Glencoe Algebra 1, 2012
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McGraw Hill Glencoe Algebra 1, 2012 View details
3. Rate of Change and Slope
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Exercise 20 Page 178

Find and compare the slope between each pair of points. What does it mean if the slopes are all the same?

Yes, see solution.

Practice makes perfect
One way to determine if a function is linear is to calculate and compare the slope of the line between points in the data set. We can do this by using the Slope Formula. Note that it is enough to check each point with just another point in the data set.