Question

Which of the following relations are functions? Give reasons. If it is a function,
determine its domain and range.
(i) {(2,1),(5,1),(8,1),(11,1),(14,1),(17,1)}
(ii) {(2,1),(4,2), (6,3), (8,4), (10,5), (12,6), (14,7)}
(i) {(1,3), (1,5), (2,5)}.​

Answer 1

Answer:

answer Solution: Given, f (x) = - |x|

Therefore, f (x)= - |x| is ≤ 0, for all x ∈ R

Therefore, Domain = R

As the range of f(x) = - |x| is all real numbers except positive real numbers.

Therefore, rage of f is {- ∞, 0}