Question

http://prntscr.com/9fim60

Answer 1

The easiest way to these kinds of questions is make a mini-graph. If you are given the x and y coordinates, plot 'em. So (-3,9)(-1,1)(0,0)(1,1)(3,9). Once you graph these points, you get a parabola, which is a curve. A linear function is a straight line, so the answer is "nonlinear".

Answer 2

hai