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OpenStudy (anonymous):
Pre Calc please help!! Which of the following quadratic functions has a graph that opens downward? A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2
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OpenStudy (anonymous):
x^2 opens up like a cup -x^2 opens down like an umbrella
OpenStudy (anonymous):
Thank you I will keep that in mind never thought of that
OpenStudy (anonymous):
How do you go from Standard Form to Intercept Form?
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