Question

Assume the point (12,18) belong to the function f of x what point belongs to y=f (2x)

Answer 1

The point (12,18) belong to the function f(x).

If y=f(2x), then:

`\begin{gathered} f(12)=18 \\ y=f(2x) \\ f(12)=f(2\cdot6)=18 \\ y(6)=f(2\cdot6)=f(12)=18 \end{gathered}`

The point (x,y) is (6,18).