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Mathematics 9 Online
OpenStudy (anonymous):

HELP ME !

OpenStudy (anonymous):

5. Which equation matches the graph shown below?(1 point) y= 8x² + 2x – 5 y = 8x² + 2x + 5 y = 2x² + 8x + 5 y = 2x² + 8x – 5

OpenStudy (mertsj):

The last one

OpenStudy (anonymous):

axis of symmetry is at x=-2=-b/(2a) so it's either C or D we'll find y-intercept to figure it out y-intercept of C is (0,5) y-intercept of D is (0,-5) so option D

Directrix (directrix):

I opt for D http://www.wolframalpha.com/input/?i=y%3D+2x%C2%B2+%2B+8x+-+5

OpenStudy (anonymous):

Thankss uu rockk :))) ♥

OpenStudy (anonymous):

Was this a unit test? @ErikaaLynn

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