calculus

i have a problem figureing out this question do you have any help? need to find the input and output of these numbers input 2 & output 9, input0 & output7, input-9 & output-2, input-20 & output-8 nothing seems to work. help me please

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  1. Except for the last one, the output is the input plus 7. I can't think of a simple rule that would apply to all four. One could write a y(x) polynomial that would go through all points. I am confused about what you mean by input-output. Are you looking for a function y = f(x)?

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