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bonufazy [111]
3 years ago
14

A hyperbola has its center at (0,0)a vertex of (0,19) and an asymptote of y=19/16^x Find the equation that describes the hyperbo

la.
Mathematics
1 answer:
Harrizon [31]3 years ago
3 0

Hyperbola centered at the origin, vertex (0,19), asymptote y = (19/16) x

The axis is the y axis so this hyperbola has the form

y^2/a^2 -x^2/b^2 = 1

We have (0,19) on the hyperbola so a=19.  I'm going to take a wild guess that b=16 so our hyperbola has equation:

\dfrac{y^2}{19^2} -\dfrac{x^2}{16^2} = 1

How do we find the asymptote?  I don't remember, it's going to be approximately the line from the origin to some point with really big x and y.

\dfrac{y^2}{19^2} = \dfrac{x^2}{16^2} + 1

As x gets big the +1 will matter less and less, so the asymptote is

\dfrac{y^2}{19^2} = \dfrac{x^2}{16^2}

(16y)^2 - (19x)^2 = 0

(16y - 19x)(16y + 19x) = 0

y= \pm \dfrac{19}{16} x

Our guess was right!

Answer:  \dfrac{y^2}{19^2} -\dfrac{x^2}{16^2} = 1

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