# Question

Consider the formula a = - b for the y -intercept.

a. Show that = a + b. Explain why this means that the predicted value of the response variable is ŷ = when x = .

b. Show that an alternative way of expressing the regression model is as (ŷ - ) = b(x - ). Interpret this formula.

a. Show that = a + b. Explain why this means that the predicted value of the response variable is ŷ = when x = .

b. Show that an alternative way of expressing the regression model is as (ŷ - ) = b(x - ). Interpret this formula.

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