How do you find the domain and range of # f(x) = 3x + 1 #?

1 Answer
May 10, 2017

Answer:

See below

Explanation:

The domain of a function is all possible values it can take on for #x#, a simple polynomial like #f(x) = 3x + 1# can take on all real numbers so it's domain is #RR#, so this means there is no real number which makes this function undefined.

Similarly the range is also #RR#, because the #y# value of the function can take on all real values, this can be seen from the graph as the line infinitly spans the #y# axis.

graph{3x+1 [-10, 10, -5, 5]}