Question

Variable y varies directly with x2, and y = 196 when x = 7.



Enter the constant of variation in the quadratic variation equation.



y = x2

Answer 1

Please help!!!!

Answer 2

I'll give medal

Answer 3

"y varies directly with x^2" means we have some equation in the form y = k*x^2 for some constant k

They want the constant of variation, so they want to know the value of k.

Answer 4

y = k*x^2

196 = k*(7)^2 ... plug in x = 7 and y = 196

solve for k

Answer 5

But I don't understand how to get the awnser:/

Answer 6

Please help my test is about to time out:( @jim_thompson5910

Answer 7

I can't help with tests

Answer 8

I know that will you jusy help me find the awnser? I want to learn how to do this

Answer 9

@jim_thompson5910