1). Make your equation equal to 0
2). Then plug in your numbers to the quadratic equation
If you have a grid with a hundred units and you need to show 1 hundredth (or 1%) you shade in 1 unit. If you need to show a tenth (or 10%) you shade 10 Units. I would need a picture of the grid to help any further.
2/3 ÷ 4 = 2/3 * 1/4 = 2/12 = 1/6
A=49.44
B=232.91
C=-283.29
(49.44-232.91)+(-283.29)=-466.76
-283-(232.91+49.44)=-565.35
I believe it would be (4,5)