Find the equation of the quadratic function f whose graph is shown below.

Question

Ponts on the graph are (-3,-1)(-2,-4)

f(x)=

Answer 1

y=ax^2+bx + c

first point
-1=9a -3b+c
second point
-2=4a-2b+c

so, two equations, three variables. You need to know y when x is zero to find c.

Answer 2

I don't understand what else do I need to do?

Answer 3

(2,6) (1,4) —> F(x) = ?