document.write( "Question 516813: I am having a hard time graphing this type of problem. I have the following:\r
\n" ); document.write( "\n" ); document.write( "(x + 3)^2 / 16 + (y - 2)^2 /36 = 1\r
\n" ); document.write( "\n" ); document.write( "I have the following\r
\n" ); document.write( "\n" ); document.write( "(x + 3)^2 / 4^2 + (y - 2 )^2 / 6^2 = 1
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Algebra.Com's Answer #345906 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
1. (x + 3)^2 / 16 + (y - 2)^2 /36 = 1
\n" ); document.write( "2. (x + 3)^2 / 4^2 + (y - 2 )^2 / 6^2 = 1
\n" ); document.write( "**
\n" ); document.write( "Both of these equations are ellipses with vertical major axis of the standard form:
\n" ); document.write( "(x-h)^2/b^2+(y-k)^2/a^2=1, a>b, with (h,k) being the (x,y) coordinates of the center.
\n" ); document.write( "..
\n" ); document.write( "(note: If the denominator under the x-term was greater than the denominator under the y-term, the ellipse would have a horizontal major axis, and the standard form would be:
\n" ); document.write( "(x-h)^2/a^2+(y-k)^2/b^2=1)
\n" ); document.write( "..
\n" ); document.write( "For equation 1.
\n" ); document.write( "center: (-3,2)
\n" ); document.write( "a^2=36
\n" ); document.write( "a=√36=6
\n" ); document.write( "length of vertical major axis=2a=12
\n" ); document.write( "vertices(end-points of major axis): (-3,2±a)=(-3,2±6)=(-3,8) and (-3,-4)
\n" ); document.write( "b^2=16
\n" ); document.write( "b=√16=4
\n" ); document.write( "length of minor axis=2b=8
\n" ); document.write( "end-points of minor axis: (-3±b,2)=(-3±4,2)=(-7,2) and (1,2)
\n" ); document.write( "Foci
\n" ); document.write( "c^2=a^2-b^2=36-16=20
\n" ); document.write( "c=√20≈4.47
\n" ); document.write( "foci=(-3,2±c)=(-3,2±4.47)=(-3,6.47) and (-3,-2.27)
\n" ); document.write( "You now have all the coordinates you need to graph equation 1.
\n" ); document.write( "I will leave it up to you to use the same procedure to find the coordinates you need to graph equation 2.
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