document.write( "Question 848107: Which of these is the standard form equation for an ellipse with foci at (3, 0) and (-3, 0), and vertices at (4, 0) and (-4, 0)? \n" ); document.write( "
Algebra.Com's Answer #510884 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" );
document.write( "Hi
\n" );
document.write( "major axis: a = 4
\n" );
document.write( "(3,0)and (-3,0);    and 6/2 = 3, foci distance from center 
\n" );
document.write( " \"9=+16+-b%5E2\"  b^2 = 7
\n" );
document.write( "\"%28x%29%5E2%2F16+%2B+y+%5E2%2F7=+1\" 
\n" );
document.write( "
\n" );
document.write( "Standard Form of an Equation of an Ellipse is \"%28x-h%29%5E2%2Fa%5E2+%2B+%28y-k%29%5E2%2Fb%5E2+=+1+\" 
\n" );
document.write( "where Pt(h,k) is the center. (a variable positioned to correspond with major axis)
\n" );
document.write( " a and b  are the respective vertices distances from center
\n" );
document.write( " and ±\"sqrt%28a%5E2-b%5E2%29\"are the foci distances from center: a > b \n" );
document.write( "
\n" );