Question

hello can you please help me posted picture of question

Answer 1

Answer:
$\frac{25-y^2}{16} + \frac{y^2}{9} = 1$

Explanation:
For the first given equation, we will need to isolate the x². This can be done as follows:
x² + y² = 25
x² + y² - y² = 25 - y²
x² = 25 - y² ..................> I

For the second given equation:
We will remove every x² and substitute with its equivalence from I as follows:
$\frac{x^2}{16} + \frac{y^2}{9} = 1$

$\frac{25-y^2}{16} + \frac{y^2}{9} = 1$

Hope this helps :)

Answer 2

It is the c)25-y^2-y^2 by 16-9 = 1