What is the domain and range of $f (x) = 2x + 3$ ?

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Answer 1 · 2017-06-22T07:17:01

$D: {x inRR}$
$R: {y inRR}$

This is just a linear function. I know this because the degree of the $x$ -variable is $1$ .

Domain and range are sets of possible values the function can have - though not necessarily at the same time.

Thus, there are no restrictions to the domain and range unless context is given.

Therefore, the domain and range is:

$D: {x inRR}$
$R: {y inRR}$

If we were to graph this function, we would get a straight line.

graph{2x+3 [-10, 10, -5, 5]}

As you can see, there is no restriction to the possible values.

Hope this helps :)

What is the domain and range of f (x) = 2x + 3f (x) = 2x + 3?