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Given a graph, can you think of two different ways to find the slope?
-1/4
We are asked to find the slope of a line. Observing the given graph, we can see that the line passes through the points (-4,5) and (0,4). 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 see that as the graph travels from left to right, the rise, or change in y, is -1. Similarly, the run, or change in x, is 4.
Substitute ( -4,5) & ( 0,4)
Subtract terms
Put minus sign in front of fraction
We obtained the same number as before. We can be sure the slope is - 14.