Does anyone know what BC would be?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.