Question

The graphs below have the same shape. What is the equation of the red
graph?

Answer 1

Explanation:

Answer 2

The answer is A.

Explanation:

Realize that the red graph is simply the blue graph shifted downwards. Hence, we simply need to subtract the units shifted from the original equation.

We see that the red graph shifted downwards by 3 units. Thus, we simply need to subtract three from the original equation.

Thus we have:

`(4-x^2)-3`

Which gives:

`1-x^2`

Here, 1 is also the y-intercept, verifying our answer.