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Graph transformation question watch

1. The points P (4, -2) lies on the curve y=f(x). Find the coordinates of the image of P when the curve is transformed to y=f(5x).

I know that this shrinks the curve horizontally (i.e. y stays the same, x changes), but I don't know how to find the new value for x. Would it just be 4/5?

Thanks!
2. (Original post by JustJusty)
The points P (4, -2) lies on the curve y=f(x). Find the coordinates of the image of P when the curve is transformed to y=f(5x).

I know that this shrinks the curve horizontally (i.e. y stays the same, x changes), but I don't know how to find the new value for x. Would it just be 4/5?

Thanks!
You have the correct thinking.

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