Because x is squared, the non-zero integers for x can be either positive or negative, and the result for y will be the same. The resulting graph will be a parabola.

Sample Calculation: ##y=3x^2-7##

If ##x=3##,

##y=3*3^2-7=3*9-7=27-7=20##

##y=20##

If ##x=-3##,

##y=3*-3^2-7=3*9-7=27-7=20##

##y=20##

graph{y=3x^2-7 [-9.88, 10.12, -7.88, 2.12]}