Give the domain and range of y=-lx-2l

Question

Please the domain and range of this function

Answer 1

Since | | operation is defined for all real numbers, domain D consists of all real numbers x, x∈R.

 

Since | | operation yields number greater of equal to zero, the range of -|x-2| is (-∞;0]. (Pay attention to the minus sign in front of |x-2| ).