What is the domain and range for # y = 9x + 11#?
1 Answer
The domain and range are both all real numbers
Explanation:
The domain of a function is the largest subset of
The possible exclusions are:

zeros of denominators,

arguments for which expressions under square root are negative,

arguments for which expressions under logarithm are negative,
Examples:
#f(x)=3/(x2)#
This function has
#f(x)=sqrt(3x1)#
This function has expression with
The domain is
#f(x)=9x+11#
In this function there are no expressions mentioned in exclusions, so it can be calculated for any real argument.
To find the range of the function you can use its graph:
graph{9x+11 [1, 10, 5, 5]}
As you can see the function goes from