Wednesday

August 20, 2014

August 20, 2014

Posted by **Ajay** on Monday, May 7, 2012 at 8:26pm.

vertices:(-8,1)(0,1) (-4,7) (-4,5)

center:(-4,1)

- Math -
**Reiny**, Monday, May 7, 2012 at 8:49pmI think you have a typo

the centre (-4,1) must be the midpoint for both axes

it works for (-8,1 and (0,1) with 2a = 8 ----> a = 4

but (-4,1) is NOT the midpoint of (-4,7 and (-4,5)

the y values are incorrect

once you have them corrected,

2b = the difference in the y values, b = half of that

then after you have found b, replace it in

(x+4)^2 /4 + (y-1)^2 /b^2 = 1

- Math -
**PLEASE HELP**, Monday, May 7, 2012 at 9:04pmi'M NOT SURE HOW TO FIND b CAN YOU SHOW ME PLEASE!

- Math -
**Reiny**, Monday, May 7, 2012 at 9:13pmAjay,

Did you not read what I said about the typo?

The way it is you cannot do the question.

Find the error and I can continue helping you.

**Related Questions**

Math - Write the standard equation of the ellipse with the given characteristics...

math please help me - Write the standard equation of the ellipse with the given...

help me please math - Write the standard equation of the ellipse with the given...

Math - Write the standard equation of the ellipse with the given characteristics...

Math/Algebra - Find the standard equation of an ellipse with the given ...

College Algebra. - Find the equation in standard form of the ellipse, given ...

Algebra 2 - Choose the equation that best represents an ellipse for the given ...

Pre-Cal - Find the standard form of the equation of the ellipse. (Remember ...

Pre-calculus - For the ellipse with equation 5x^2+64y^2+30x+128y-211=0, find the...

algebra - 1)Write an equation for an ellipse if the endpoints of the major axis ...