Question

Which of the following equations is of a parabola with a vertex at (0, -5)?
y= (x- 5)^2
y= (x+ 5)^2
y=x^2- 5
y=x^2+ 5

Answer 1

Its the thrid choice. y=x^2-5. the (x-h) means the graph will be shift in the x axis. But the vertex is at 0 on the x axis, and the graph is shifted down 5 units in the y axis so -5 should be the constant.