Question

Now solve this equation for y. Remember the roller coaster is above ground, so you are only interested in the positive root.

Answer 1

Answer:

$y = \sqrt{ 900 - x\²$

Step-by-step explanation:

In the complete question, the area of  the roller coaster is:

$x\² + y^2 = 900$

Required

Solve for y

We have:

$x\² + y^2 = 900$

Subtract $x\²$ from both sides

$y^2 = 900 - x\²$

Take positive roots of both sides

$y = \sqrt{ 900 - x\²$