Attached is the graph of y=f(x), on the same grid I hae to graph y=f(2x) and y=3f(x). For y=3f(x) I got the coordinates (-4,-12), (-2,-6), (0,0), (2,6) and (6,18) which results in a straight line, for y=f(2x) I multiplied all x-coordinates by 2 which again resulted in coordinates that give a straight line the also don't stay on the same grid as y=f(x) so I'm trying to figure out what the coordinates for these graphs are.

Thank you.