What is the range of the function y = 3x when the domain is 9, 12, 15? Please explain how you got your answer.

Question

anonymous · Answer

if you need only the range of the points corresponding to those points then 27, 36 and 45. If the domain were all real numbers, the range would also be all real numbers,

anonymous · Answer

Thank you :) So my teacher says I don't have to graph it, I just have to write it. That's all I would say is 27, 36, and 45?

anonymous · Answer

Because he calls on random people to come up and show how you got the answer and if I just wrote that, I would seem like a dumbass.

anonymous · Answer

if your teacher specified that the domain is only 9,12 and 15 then you should say 9,27 12,36 and 15,45 because the y value is simply 3 times the x value(domain)