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Mathematics 8 Online
OpenStudy (anonymous):

Which of the following quadratic functions has a graph that opens downward? More than one answer.. a. y=2x-x^2 b. y=1/3x^2-8x-13 c. y=2/3x^2-13x+5 d. y=-(3+x^2) Which of the following quadratic functions has a graph that opens downward? More than one answer.. a. y=2x-x^2 b. y=1/3x^2-8x-13 c. y=2/3x^2-13x+5 d. y=-(3+x^2) @Mathematics

OpenStudy (anonymous):

the ones with negative "leading coefficients"

OpenStudy (anonymous):

so d.??

OpenStudy (chriss):

a and d

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