
Patrick B. answered 12/15/18
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Math and computer tutor/teacher
So f(-1) = 2 and f(1) = -3
The lowest degree polynomial is a line with slope M = (-3 -2)/(1--1) = -5/2
Using (1,-3)
B = y - mx = -3 - (-5/2)(1) = -3 - (-5/2) = (-6/2) - (-5/2) = -1/2
y = (-5/2)x - 1/2