-gives-the-correct-vertex-form-for-a-vertical-parabola-and-identifies-its-vertex

Question

Which of the following correctly presents the vertex form of a vertical parabola and identifies its vertex?

Accepted Answer

y=a(x−h)2+ky = a(x - $$h)^2 + k $$with vertex at (h,k)(h, k)

Answer

x=a(y−k)2+hx = a(y - $$k)^2 + h $$with vertex at (h,k)(h, k)

Answer

y=a(x+h)2+ky = a(x + $$h)^2 + k $$with vertex at (h,k)(h, k)

Answer

y=a(x−h)2+ky = a(x - $$h)^2 + k $$with vertex at (−h,k)(-h, k)