Question

For the function y = 5 – 4x, given the domain {-1, 0, 1}, the range is

Answer 1

Hi there!  

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I believe your answer is:  

{1, 5, 9}

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Here’s why:  

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$y = 5 - 4x\\\\\rightarrow y = 5-4(-1)\\\\\rightarrow y = 5 + 4\\\\\rightarrow \boxed{y = 9}$

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$\rightarrow y = 5 - 4(0)\\\\\rightarrow y = 5 - 0\\\\\rightarrow \boxed{y = 5}$

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$\rightarrow y = 5 - 4(1)\\\\\rightarrow y = 5 - 4\\\\\rightarrow \boxed{y = 1}$

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Hope this helps you. I apologize if it’s incorrect.  

Answer 2

The range is {1, 5, 9}