The vertex of this parabola is at (4, - 3). Which of the following could be its equation?

One way to write the equation for the parabola is into the vertex form: x = a (y - k) ² + h, where the parabola changes direction at (h, k), the x and y coordinates of the vertex. Since the vertex of the given parabola is at (4, - 3), we can therefore write its equation as x = (y+3) ² + 4.