How do you find the domain and range of $y = 3x + 8$ ?

Question

3622 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-03-20T20:01:01

I found all the real $x$ and all the real $y$ .

Your equation represents, graphically a straight, line of slope $3$ and passing through $x=0,y=8$ .

graph{3x+8 [-10, 10, -5, 5]}

It can accept any real $x$ value and gives you, as a result, any real $y$ value; so the domain is all the real $x$ and range all the real $y$ .

How do you find the domain and range of y = 3x + 8y = 3x + 8?