Question

http://prntscr.com/3ksfm8

Would somebody give me an explanation on how to do this?

Answer 1

Look at the graph and answer my question. when x =0 , y =?
when y =0, x =?

Answer 2

I can't tell if that's a trick question or not. x = 0 and y = 0?

Answer 3

nope, x =0 y = -3, check it. you MUST know how to "read" the graph