Posted by sam on Thursday, April 26, 2012 at 5:16pm.
Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0).

algebra 2  Reiny, Thursday, April 26, 2012 at 6:15pm
the major axis is horizontal and
a = 4, b = ? and c = 5
I recognize the 345 Pythagorean triangle, so b = 3
equation:
x^2/16  y^2/9 = 1

algebra 2  sam, Friday, April 27, 2012 at 1:29pm
That isn't one of the choses...
1) x^2/64x^2/16=1
2)x^2/16y^2/64=1
3)y^2/48x^2/16=1
4)x^2/16y^2/48=1
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