Question

PLEASE HELP!!
The value of y varies directly with x2, and y = 36 when x = 3.



What is the value of y when x = 5?

Answer 1

When you said "x2" do you mean "x squared"?

Answer 2

yeah

Answer 3

Refer to the attachment

Answer 4

i still dont understand...

Answer 5

Let y = k x^2
y=36 and x=3
Plug in the values for y and x into y = k x^2 and then solve the result for k.
k = 4
y = 4 x^2
When x=5, y=4*5^2
y = 4*25 = 100

Answer 6

thanks

Answer 7

Your welcome and thank you for the medal.

Answer 8

you're welcome :)