to tell if it is odd or even
if it is odd, when you replace x with -x, you get the negative of the function
basically f(-x)=-f(x)
if it is even, yo get the same value when replace x with -x
basically f(-x)=f(x)
so replace xwith -x
y=(-x)^2-6
y=x^2-6
same thing
even
