Sign

Algebra Level 1

$a$ is a real number.

The number $-a$ is─

C)

Indeterminate with respect to given information

A)

Positive

B

Negative

1 solution

Oliver Papillo
Jan 24, 2018

If $a$ is positive, $-a$ is negative.

If $a$ is negative, $-a$ is positive.

If $a$ is $0$ , $-a$ is neither negative or positive.

So there's no way to know which sign $-a$ has.

And if a is 0, -a is neither positive nor negative

Aryan Sanghi - 3 years, 4 months ago

Thanks, I'll add that to my solution.

Oliver Papillo - 3 years, 4 months ago