Quadratic functions-using vertex form

(h, k) represents the vertex (highest or lowest point) of the parabola

The h in ( ) represents your which is your axis of symmetry (the vertical line that divides the parabola in 2 equal halves

The k represents your y (which is needed to complete your vertex)

The h also represents how the far the graph shifted horizontally when x = 0

The k also represents how far the graph shifted vertically when y = 0

Whatever is in ( ) is set to zero and solve for x

If x has a coefficient of 1, your h value is the opposite of what you see

Your k value is what you see

Example: in the equation

The vertex in the above example is (-3, 5) and shifts 3 to the right and 5 up from (0, 0)