Question 1053508
determine the quadratic function f whose graph is given. The vertex is (1,-1) and the other given point is (2,1)
<pre>Vertex form of parabolic equation: {{{y = a(x - h)^2 + k}}}
Substitute (1, - 1) for (h, k) and (2, 1) for (x, y). You should get a value of 2 for a, which leads to the following equation, in vertex form: {{{highlight_green(f(x) = 2(x - 1)^2 - 1)}}}</pre>