On the same set of coordinate axes draw the graphs of y - x2 = 0,  y - x2 = 3 and y - x2 = -2

On the same set of coordinate axes draw the graphs of y - x2 = 0, 

y - x2 = 3 and y - x2 = -2. These are level lines of the function

g(x,y) = y - x2 .

Based you your graph, answer the following questions:

How many points are on the three parabolas altogether for y = 3? (just enter a number) 

Which parabola is above the other two? y - x2 = 

I got 1 for "how many points" and 3 for the second question...but I think I am missing something...my next answer would be that y-x^2= 0 as it's the middle unless everything to the right is always above everything to the left ?