How do you find the domain and range of $y= -1/2 x ^2$ ?

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Answer 1 · 2015-10-09T12:15:45

Domain: $RR$
Range: $RR <= 0$

$(-1/2x^2)$ is defined for all Real values of $x$
$rArr$ the Domain is $RR$

$y$ is $<=0$ for all values of $x$
$rArr$ the Range is $RR <= 0$

How do you find the domain and range of y= -1/2 x ^2y= -1/2 x ^2?