For the graph of the parent function y = x2, you can think of any vertical stretch or shrink as an equivalent horizontal shrink or stretch. For example, the equations y = 4x2 and y = (2x)2 are equivalent, even though one represents a vertical stretch by a factor of 4 and the other represents a horizontal shrink by a factor of . For the graph of any function or relation, is it possible to think of any vertical stretch or shrink as an equivalent horizontal shrink or stretch? If so, explain your reasoning. If not, give examples of functions and relations for which it is not possible.