Question 1134790

 an equation in standard form for the ellipse is:

{{{x^2/a^2+y^2/b^2=1}}}

given: 
major axis is {{{a}}}
if endpoints ​({{{6}}}​,{{{6}}}​) and ​({{{6}}}​,{{{-12​), the distance between them will be the length of {{{a}}}
{{{a=sqrt((6-6)^2+(6-(-12))^2)}}}
{{{a=sqrt(0+(6+12)^2)}}}
{{{a=sqrt((18)^2)}}}
{{{a=18}}}


minor axis length {{{b=4}}}

{{{x^2/18^2+y^2/4^2=1}}}