SOLUTION: Tickets=-0.2x^2+12x+11 Does the graph of this equation open up or down? How do you know?

SOLUTION: Tickets=-0.2x^2+12x+11 Does the graph of this equation open up or down? How do you know?

Algebra.Com

Question 276032: Tickets=-0.2x^2+12x+11
Does the graph of this equation open up or down? How do you know?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
it opens down since the coefficient of x^2 is negative
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