Practice problem
Select all points below that lie on the graph of the function f(x)=x2f(x) = x^2f(x)=x2.
(y,x)(y,x)(y,x), as long as y=f(x)y = f(x)y=f(x)
(x,f(x))(x,f(x))(x,f(x)) for all xxx
(3,9)(3,9)(3,9)
(9,3)(9,3)(9,3)
Type a concept, like “slope” or “photosynthesis”.