If you are asking how to plot the points then try this simple trick, a point is always (x,y) so the horizontal line of a graph will always be x and the vertical always y. So for your first point it says x=0 so place your finger on the 0 of the graph (in other words where the 4 lines meet) since it says y=-3 then you go down 3 spots. Your first point is graphed! Do you want to try finding the other point? I'll be here to help :)
