find-the-equation-of-a-hyperbola-with-vertices-at-0-7-and-0-7-and-asymptotes-given-by-the-equations-y-3x-and-y-3x

Find the equation of a hyperbola with vertices at (0 , -7) and (0 , 7) and asymptotes given by the equations y = 3x and y = – 3x.