Question

What is the domain of the relation graphed below?

Answer 1

the answer : domain is third one

Answer 2

C) {x|
`-4\leq x\leq 4`}

Explanation:

The graphed figure is an 'Ellipse' which has the form,

`(x^(2) )/(a^(2) ) +(y^(2) )/(b^(2) ) = 1`

where
`-x\leq a\leq x` and
`-y\leq b\leq y`.

Also, the domain of an ellipse is the range of 'a'

i.e.
`-x\leq a\leq x`

i.e.
`-4\leq a\leq 4`

Hence, the domain is {x|
`-4\leq x\leq 4`}