SOLUTION: How can I solve x^2 +6x+8 by graphing ?

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Question 940349: How can I solve x^2 +6x+8 by graphing ?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
to solve y=x%5E2+%2B6x%2B8 by graphing, make a table, choose several values for x, find y, plot all points from a table and draw a line through:
x|y
0|8 ....y=0%5E2+%2B6%2A0%2B8=8
-10|48 ....y=%28-10%29%5E2+%2B6%2A%28-10%29%2B8=100-60%2B8=48
-5|3 ....y=%28-5%29%5E2+%2B6%2A%28-5%29%2B8=25-30%2B8=3
-4|0 ....y=%28-4%29%5E2+%2B6%2A%28-4%29%2B8=16-24%2B8=24-24=0
-3|-1 ....y=%28-3%29%5E2+%2B6%2A%28-3%29%2B8=9-18%2B8=17-18=-1
-1|3 ....y=%28-1%29%5E2+%2B6%2A%28-1%29%2B8=1-6%2B8=9-6=3
1|15 ....y=%281%29%5E2+%2B6%2A%281%29%2B8=1%2B6%2B8=15
3|35 ....y=%283%29%5E2+%2B6%2A%283%29%2B8=9%2B18%2B8=35
4|48 ....y=%284%29%5E2+%2B6%2A%284%29%2B8=16%2B24%2B8=48
plot these points and draw a line through: