SOLUTION: What is the domain when f(x)=21-3x? *The answer is NOT all real numbers

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Question 854544: What is the domain when f(x)=21-3x?
*The answer is NOT all real numbers
Answer by harpazo(655) About Me  (Show Source):
You can put this solution on YOUR website!
Your equation is linear. It is a straight line. Thus, the domain is
(-infinity, + infinity).