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noname [10]
3 years ago
7

Write the standard equation for the hyperbola with the following conditions: vertices: (-2, -3) and (6, -3) foci: (-4, -3) and (

8, -3)

Mathematics
1 answer:
STALIN [3.7K]3 years ago
8 0
Hello,

Vertices are on a line parallele at ox (y=-3)

The hyperbola is horizontal.

Equation is (x-h)²/a²- (y-k)²/b²=1

Center =middle of the vertices=((-2+6)/2,-3)=(2,-3)
(h+a,k) = (6,-3)
(h-a,k)=(-2,-3)
==>k=-3 and  2h=4 ==>h=2
==>a=6-h=6-2=4 (semi-transverse axis)

Foci: (h+c,k) ,(h-c,k)
h=2 ==>c=8-2=6

c²=a²+b²==>b²=36-4²=20

Equation is:
\boxed{ \dfrac{(x-2)^2}{16} - \dfrac{(y+3)^2}{20} =1}





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HELP PLS❗️ Given A(- 1, 4) , B(1, 5) , C(- 5, 3) which coordinate will make line AB parallel to CO?
laiz [17]

Answer:

The coordinate of the point that will make AB parallel to CO is D(-3, 4)

Step-by-step explanation:

The given points on the line AB are;

A(-1, 4), and B(1, 5)

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Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

The slope, m, of the segment with points A and B is therefore;

Slope, \, of \ line  \ AB \ m_{(AB)}=\dfrac{5-4}{1-(-1)} = \dfrac{1}{2}

For the line CO to be parallel to the line AB, the slope of line CO must be equal to the slope of the line AB

Therefore, the slope of the line CO = 1/2

The equation of the line CO in point slope form is therefore, y - 3 = 1/2(x - (-5))

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The coordinate of the point that will make AB parallel to CO is D(-3, 4).

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