SOLUTION: Write the equation for the hyperbola in standard form and general form. center (4,0), one vertex (2,0), slope of one asymptote 3/2 ---------- As I understood for the standar

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Write the equation for the hyperbola in standard form and general form. center (4,0), one vertex (2,0), slope of one asymptote 3/2 ---------- As I understood for the standar      Log On


   



Question 1204699: Write the equation for the hyperbola in standard form and general form.
center (4,0), one vertex (2,0), slope of one asymptote 3/2
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As I understood for the standard form equation, a^2 is always in the first denominator and b^2 always in the second denominator for hyperbolas and that (x-h)^2 in the first numerator represents a horizontal transverse axis whereas (y-k)^2 in the first numerator represents a vertical transverse axis.
I think the asymptote equations are y = k +- b/a(x-h) for horizontal transverse axis and y = k +- a/b(x-h) for vertical transverse axis. But I am still confused. When I’m given a slope like 3/2, what does that mean for the values of a and b? Is 3/2 the same as the “+-b/a” in an asymptote equation? Or is it 2/3? I know that a slope (m) = y2-y1 / x2-x1, but the use of a/b or b/a in the asymptote formula and how a or b can both be in the denominator of either (x-h)^2 or (y-k)^2 depending on whether transverse axis is horizontal or vertical has muddled everything in my head. What I think I’m trying to say is that rise/run (y2-y2/x2-x1) vs b/a and b/a and how they relate to y and x in the slope and a and b in the standard form equations is causing me confusion.

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

The center of a hyperbola is (4,0), so (h, k)=(4,0) => h=4, k=0
One of the vertices is (2,0), the same ordinate as the center, so we have hyperbola with a horizontal transverse axis.
For a hyperbola with a horizontal transverse axis, the relationship between the center and vertex is as follows:
vertex is at (2,0)=(h-a,k)
so, h-a=2
since h=4, we have
4-a=2
4-2=a
a=2
For a hyperbola with a horizontal transverse axis, the slope of the asymptotes is
mb%2Fa
if given slope m=3%2F2 and a=2, we have
b%2F2=3%2F2+=>b=3

The equation of the hyperbola in standard form with a horizontal transverse axis is
%28x-h%29%5E2%2Fa%5E2-%28y-k%29%5E2%2Fb%5E2=1
substitute all the components
%28x-4%29%5E2%2F2%5E2-%28y-0%29%5E2%2F3%5E2=1
%28x-4%29%5E2%2F4-y%5E2%2F9=1=>your answer