Question

Suppose f(x)=x^2. what is the graph of g(x)=f(3x)?

Answer 1

F(x)=x2,g(x)=f(3x)=(3x)2=9x2Now to graph y=9x2. This is a parabola (U-shape), vertex at (0, 0), symmetric aroung y  axis. When x=1/3 or -1/3, then y=1.