The domain of function is .
Let x is the input and y is the output.
\The word more than
indicates addition and the symbol
.
The word is
indicates the symbol
.
The word The output y is 9 more than the input x
indicates the equation
.
Substitute the values for x in the function equation
.
If then
.
If then
.
If then
.
If then
.
Therefore range is all output values, .
The equation for function and the range is
.