CPM Homework Help : AC Problem 12-40

A downward parabola with vertex at the point (1, comma 4) and going through the points (negative 1, comma 0), (0, comma 3), and (3, comma 0). Find the equation of $f(x)$ graphed at right.

Hint:

Find the $x$ -intercepts.
Their $x$ -coordinates are roots of the equation.

More Help:

See the homework help for problems 11-13 and 11-69.

Use the eTool below to help you find the equation for each function.
Click on the link at right for the full eTool version: 12-40 HW eTool (Desmos)