Question 495875
Simply find the set of all possible x-values, and the set of all possible y-values. For example,


*[tex \LARGE k(x) = \sqrt{x-3}]


is not defined on real numbers if x < 3. Also, the range of k(x) is [0, infinity) because the square root of any real number is nonnegative.


Try the others the same way.