Thursday

October 30, 2014

October 30, 2014

Posted by **Jodine** on Monday, January 12, 2009 at 7:30pm.

I am supposed to convert this to standard form, but my answer doesn't make sense. One part was 9x^2/92...does that sound right?

- Math 30 Pure -
**Damon**, Monday, January 12, 2009 at 8:09pm16 y^2 + 64 y = - 9 x^2-28

y^2 + 4 y = (- 9 x^2-28 )/16

y^2 + 4 y + 4 = (- 9 x^2-28 )/16 +64/16

(y+2)^2 = (-9 x^2 + 36 )/16

(y+2)^2 + (9/16) x^2 = 36/16

16/36 (y+2)^2 + 9/36 x^2 = 1

x^2/2^2 + (y+2)^2/(3/2)^2 = 1

ellipse with center at (0,-2)

x half axis length 2

y half axis length = 1.5

- Math 30 Pure -
**Andrew**, Tuesday, April 28, 2009 at 6:11pmShouldn't it equal zero anyway because what does Y equal?

**Answer this Question**

**Related Questions**

Math - 9x^2+16y^2-18x+64y-71=0 find the coordinates of the center, the foci, and...

math - clasifying conics 4xsquared=64-64ysquared 4x^2 = 64 - 64y^2 4x^2 + 64y^2...

math - Q: Convert 4x^2 + 4y^2 -8x -16y -29 = 0 into standard form. I first ...

Algebra - Totally confused-learned this today and I don't get it-Please help ...

Math Algr.2 - Convert to standard form (AX+BY=C) 1.y=3/2x+6 2. 2/3y=2x-5 3.7y-21...

scientific notations - Explain how to convert seven point one three times ten ...

Math - algebraish - hey how do we convert y=mx+b to standard form? the standard ...

algebra - I am supposed to write each logarithmic expression as a single ...

algebra - Find the vertices and foci of this ellipse 4x^2+16y^2+64x+64y+256=0

math/Check! - a. An ellipse is formed by stretching the graph of x^2+ y^2=1 ...