Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
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Exercise 11 Page 354

Use one of two ways to find the slope, given a graph.

-1/2

Practice makes perfect

Observing the given graph, we can see that the line passes through the points (-1,0) and (1,-1). One way to use a graph to find the slope of a line is to count out the change in x and y.

We can tell from the given graph that the rise, or change in y from left to right, is -1. We can also see that the run, or change in x from left to right, is 2. slope=rise/run ⇔ m=-1/2 We can confirm this answer by using the other method, the Slope Formula. m = y_2-y_1/x_2-x_1 Let's use the given points to solve for the slope.
m = y_2-y_1/x_2-x_1
m=-1- 0/1-( -1)
m=-1-0/1+1
m=-1/2
m=-1/2