# Find An Equation In Standard Form For The Hyperbola With Vertices At (0, ±2) And Foci At (0, ±11).

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Find an equation in standard form for the hyperbola with 0 votes

## vertices at (0, ±2) and foci at (0, ±7).You are watching: Find an equation in standard form for the hyperbola with vertices at (0, ±2) and foci at (0, ±11).

Given hyperbola

General equation of a hyperbola

We have foci and vertices are on the y-axis, which means that we needs the formula for a up and down hyperbola.

This means that the center (h, k) must be a the origin, or (0, 0). So, let”s label that…

h = 0k = 0

We know that “a” is the distance from your vertex and “c” is the distance from your foci

a = 2 and c = 7

We have a formula that

Now fill that

h = 0

k = 0

Therefore the required equation of hyperbola is

The vertices of the hyperbola are (0, 2) and (0, – 2) and its foci are (0, 7) and (0, – 7).

Since the x – coordinate isconstantin theverticesandfoci, this is a vertical hyperbola.

The standard form of vertical hyperbola (y – k)2/a2 – (x – h)2/b2 = 1.

Where, “b ” is the number in the denominator of the positive term, If the x – term is negative, then the hyperbola is vertical.a = semi – transverse axis , b = semi – conjugate axis .Center: (h, k )Vertices: (h , k + a ) and (h, k – a).Foci: (h , k +c) and (h, k – c).

So, the x coodinate of the center of hyperbola is 0.

vertices : (0, 2) and (0,- 2)

k + a = 2 —-> (1)

ka = – 2 —> (2)

Add the equations (1) & (2).

2k = 0

k = 0

So,the y coordinate of center is 0.

Substitute the k value in (1),

0 + a = 2

a = 2.

foci : (0, 7) and (0, – 7)

k + c = 7

0 + c = 7

c = 7

c2 = a2 + b2

(7)2 = (2)2 + b2

49 – 4 = b2

b = √45

Substitute the (h , k), a, and b in standard form of hyperbola equation .

(y – 0)2/22 – (x – 0)2/(√45)2 = 1

(y – 0)2/4 – (x – 0)2/45 = 1.

Therefore, the standard form of hyperbola is (y – 0)2/4 – (x – 0)2/45 = 1.