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Given a graph, can you think of two different ways to find the slope.
-1/5
Observing the given graph, we can see that the line passes through the points (-2,3) and (3,2). We can use a graph to find the slope of a line. Let's take a look at the change in x and y between the given points.
We can see that as the line falls from left to right. Therefore, the slope is negative. The rise, or change in y, is -1. Similarly, the run, or change in x, is 5. Now we are ready to find the slope m.
Substitute ( -2,3) & ( 3,2)
a-(- b)=a+b
Add and subtract terms
Put minus sign in front of fraction
We got the same number as before. We can be sure the slope of the line is - 15.