Question

If you horizontally stretch the quadratic parent function f(x)=x^2 by a factor of 3

Answer 1

The new function is (x/3)^2.

Explanation:

If f(x) is horizontally stretched by a factor a the function is f(x/a).

So for f(x) = x^2 it becomes (x/3)^2.

Answer 2

g(x)=(1/3x)^2 is the answer