What is a reasonable domain for f(x)=12x+50

Question

I need help understanding domain and range as well

Answer 1

The domain is all possible values for x.  The range is all possible values for y.

 

Find some values, plot the graph and you should be able to tell the domain.

 

x   -5    0     5                                 12(-5)+50=-10   12(0)+50=50   12(5)+50=110

______________

y   -10  50   110

 

The domain would be all real numbers.  There is nothing that would restrict the value.

Answer 2

All polynomial-like functions have a domain and range of all real numbers.