blahblah_who_cares
What formula was b/2a called again? And does anybody have an idea of what formulas or things you should know for Algebra 2 trig first semester final?



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jim_thompson5910
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That's the x coordinate of the vertex of the parabola.

jim_thompson5910
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dw:1358899619402:dw

blahblah_who_cares
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Isnt there a specific name for it?

jim_thompson5910
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dw:1358899644529:dw

jim_thompson5910
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dw:1358899664360:dw

jim_thompson5910
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since the parabola can reflect over that line and match up with itself

blahblah_who_cares
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I know what it does. Im just curious if there is a name for it.

jim_thompson5910
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i just told you lol

jim_thompson5910
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b/2a gives you the axis of symmetry
