What do you think the graph ... graph has not moved up or down maximum turning point when \(y = 1\) and minimum turning point when \(y = - 1\) The graph looks like: Now try the example questions ...

If \(f(x) = x^2\), then \(af(x) = a(x^2)\). This tells us that we need to multiply each of the \(y\) coordinates on the graph by \(a\) in order to stretch the original graph. Looking at some ...