Equation of Parabolas

Question

Find the equation of the parabola with vertex at the origin that satisfies the given condition:

axis x 􏰁= 0, passing through (-1, 5)

axis y=0, passing through (-1, 5)

Answer 1

y = kx^2

5 = k*(-1)^2

k = 5

y = 5x^2