center at (1,4); focus at (-2,4); vertex at (0,4)

i know how to get h and k but i dont know how to get a^2 and b^2===>

(x-1)^2 (y-4)^2

_______ - ______

?

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- December 3rd 2012, 08:10 PMalyse2526how do i find an equation for the hyperbola

center at (1,4); focus at (-2,4); vertex at (0,4)

i know how to get h and k but i dont know how to get a^2 and b^2===>

(x-1)^2 (y-4)^2

_______ - ______

? - December 3rd 2012, 08:54 PMRBowmanRe: how do i find an equation for the hyperbola
a is the distance from center to vertex. So a = 1, and a

^{2}= 1.

c is the distance from center to focus. So c = 3, and c^{2}= 9.

Also rememver that b^{2}= c^{2}- a^{2}.