Question 881689
<pre> The other tutor's answer is correct, but he uses "a"
and "b" in reverse of the usual way. "a" is the length of
the semi-major axis and "b" is the length of the semi-minor
axis.
<pre>
{{{drawing(320,400,-6,2,-3,7, grid(1),arc(-3,2,-2,6),
green(line(-4,2,-2,2),line(-3,-1,-3,5))

)}}}

(h,k) = (-3,2), a=3, half of 6, b=1, half of 2

{{{(x-h)^2/b^2}}}{{{""+""}}}{{{(y-k)^2/a^2}}} {{{""=""}}} {{{1}}}

{{{(x-(-3))^2/1^2}}}{{{""+""}}}{{{(y-2)^2/3^2}}} {{{""=""}}} {{{1}}}

{{{(x+3)^2/1}}}{{{""+""}}}{{{(y-2)^2/9}}} {{{""=""}}} {{{1}}}

Edwin</pre>