The vertex is supposed to be a point, (x, y) = (h, k). Try using the formula to get the value of h, and then plug that into f(x) to find the value of k.
To find the intercepts, plug in zeroes where appropriate. To find the x-intercepts, either factor
or else use the Quadratic Formula
. To find the y-intercept, simply evaluate.
If you are unsure of your answers, please reply showing your work
. Thank you.