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The graph of a quadratic equation opens down when the value of abc is negative
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The graph of a quadratic equation opens down when the value of abc is negative

User Lidqy
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If a is negative it will have a max vertex and an open down graph and when you have a positive a your graph will open up
User Andrewmabbott
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If the coefficient of x^2 is negative than it will open down. If the coefficient of x^2 is positive it will open up.
User Matthew Cole
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