Question

What is the range of the function y = |x|?

Answer 1

You look at what kind of y values you could get if you put in any x...in that case, since it's absolute value, any negative number you put in will be positive, positive will be positive, etc. 0 will be 0
so, in proper notation, {y | y => 0}

Answer 2

here u see mod x graph & u see y>0.so range is y>0.