SOLUTION: The graph of y = –2x2 + 15x + c contains (3, 89). Find the value of c.
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Question 689954: The graph of y = –2x2 + 15x + c contains (3, 89). Find the value of c.
Answer by Stitch(470) (Show Source): You can put this solution on YOUR website!
Given:
And the point (3,89)
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That means that when you plug 3 into the equation for X, then Y will be 89.
Rewrite the equation
Simplify the equation
Simplify the equation
Combine like terms
Subtract 27 from both sides
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