Asked by steve
                what is the rule for the function shown in the table below?
x -1 0 1 2
y -2 1 4 7
            
        x -1 0 1 2
y -2 1 4 7
Answers
                    Answered by
            Steve
            
    note that as x increases by 1, y increases by 3, so first guess:
y = 3x
But, y(0) = 1 instead of 0, so next guess:
y = 3x+1
that works for all of them.
    
y = 3x
But, y(0) = 1 instead of 0, so next guess:
y = 3x+1
that works for all of them.
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