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

Enter the constant of variation in the quadratic variation equation.

y = x2

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

anonymous · Answer

Please help!!!!

anonymous · Answer

I'll give medal

jim_thompson5910 · Answer

"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.

jim_thompson5910 · Answer

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

anonymous · Answer

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

anonymous · Answer

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

jim_thompson5910 · Answer

I can't help with tests

anonymous · Answer

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

anonymous · Answer

@jim_thompson5910