Find the equation whose graph is a parabola with vertex (2,4), vertical axis of symmetry, and contains the point (1,-1). Express your answer in the form "ax^2+bx+c".
+37157 Verte4x form of parabola
y = a (x-2)^2 + 4 sub in the given point (1,-1) to find
a = -5
y = -5 (x-2)2 + 4 <========expand to get requested form .....
