Ineed to know how to do that problem?

Each scale div. on the vert. axis represents 4 units.  Starting with the 8 shown, count your way down the vert. axis:  8, 4, 0, -4, -8 (and so on).

Each scale div. on the horiz. axis represents 4 units.  Count your way up, starting from -12:  -12, -8, -4, 0, 4,  8, 12, 14, and so on.

Aquadratic function is one of the form f(x)=ax2 + bx + c l, where a,b, and c are numbers with are not equal to zero.