Let `f={(0,-5),(1-2),(2,1),(3,4),(4,7)}` be a linear function from Z i – InterviewSolution

1.	Let `f={(0,-5),(1-2),(2,1),(3,4),(4,7)}` be a linear function from Z into Z. Write an expression for f.
Answer» Correct Answer - `f(x)=3x-5` Let `f(x)=ax+b`. `f(0)=-5impliesaxx0+b=-5impliesb=-5`. `f(1)=-2impliesaxx1+b=-2impliesa-5=-2impliesa=3`.

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