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Mathematics 23 Online
OpenStudy (anonymous):

Parabola help!

OpenStudy (anonymous):

How would I get a parabola on a graph like this|dw:1401207668508:dw|

OpenStudy (anonymous):

@ganeshie8

OpenStudy (solomonzelman):

In ax^2+bx+c=0 if a is negative it opens down, just like you need. If a is positive then it is U shaped. If it's zero it's not a parabola.

OpenStudy (solomonzelman):

do you need it at a specific center or anything like that ?

OpenStudy (anonymous):

yeah I need it at -3,5 for one and the other I need at 3,5

OpenStudy (anonymous):

I have to make eyes for a clown and i can't use circles again @SolomonZelman

OpenStudy (solomonzelman):

Okay, So parabola has a form of \(\Large\color{red}{ \bf y=a(x-h)^2+k }\) choose any a that would determine how skinny or wide the parabola is (and if it is + or - if it is opening up or down)

OpenStudy (solomonzelman):

\(\Large\color{red}{ \bf 5=a(~~(-3)-h)^2+k }\)

OpenStudy (solomonzelman):

I would choose a=1 for positive (open ups) and a=-1 for negative (opens down)

OpenStudy (anonymous):

oh my gosh thank you!!!

OpenStudy (solomonzelman):

Anytime !

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