Question: Suppose that E(y) is related to two predictor variables, x1 and x2, by the equation E(y) = 3 + x1 - 2x2 a. Graph the

Suppose that E(y) is related to two predictor variables, x1 and x2, by the equation
E(y) = 3 + x1 - 2x2
a. Graph the relationship between E(y) and x1 when x2 = 2. Repeat for x2 = 1 and for x2 = 0.
b. What relationship do the lines in part a have to one another?

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