(Section 1.4: Transformations) 1.4.8 • For any x-value in 0,±²³), such as 1, the corresponding y-coordinate for the y=xgraph is doubledto obtain the y-coordinate for the y=2xgraph. This is why there is vertical stretching. • Similarly, the graph of y=12xexhibits vertical squeezing, because the y-coordinates have been halved. §Example 8 (Horizontal Stretching and Squeezing; Revisiting Example 7)Again, let fx()=x. Now consider the form y=fcx. The graph of y=f4xis the graph of y=2xin blue, because: f4x=4x=2x.The vertical stretching we described in Example 7
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