dont no how tu make a graf heer, how bout the zeroes????
y=0.0018 x^2 +0.657x +50.95=0
or 18x^2 +6570x +509500=0
zeroes...x=-111.7844116 & -253.2155884
& at x=0, y=50.95 (original equashun)
then tri a point such as x=-100...x^2=10000, y=18- 65.7+50.95...=3.25