Question 1035048
<pre>
{{{ x^2/16 + y^2/4 = 1 }}}

Multiply through by LCD = 16

{{{x^2+4y^2 = 16}}}

Addd -x<sup>2</sup> to both sides:

{{{4y^2 = 16-x^2}}}

Divide both sides by 4

{{{y^2 = (16-x^2)/4}}}

Use the principle of square roots:

{{{y = "" +- sqrt(16-x^2)/2}}}

Edwin</pre>