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Mathematics 18 Online
OpenStudy (anonymous):

In the function y+3=(2x)^2+1, what effect does the number 2 have on the graph, as compared to the graph of y=x^2? A. It shrinks the graph horizontally to 1/2 the original width B. It shrinks the graph vertically to 1/2 the original height C. It stretches the graph vertically by a factor of 2. D. It stretches the graph horizontally by a factor of 2.

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