Question

Question #ab2af

Answer 1

See below.

Explanation:

Simple. Flip the leading variable.

Let's say we have the function `f(x)=x^2+4x+4`.

This parabola will open upward:
graph{x^2+4x+4 [-10, 10, -5, 5]}

Now flip the leading variable, here `x^2`. Basically, make it negative: `-x^2`. To make it flip exactly, multiply the function by `-1`.

So now we've got `f(x)=-x^2-4x-4`
This will open downward, and you've flipped it.
graph{-x^2-4x-4 [-10, 10, -5, 5]}