Question

Variable y varies directly with x^2, and y = 75 when x = 5.



What is the value of y when x = 3?

Answer 1

direct variation is

y = kx^2

so use the information y = 75 and x = 5

to find k.

then use k and the direct variation equation above to find y when x = 3

hope it helps

Answer 2

y=27

Answer 3

@1497