Q 8

Suppose the regression line for a scatterplot passes through the points (0, 30) and
(5, 20). What type of association exists between the variables?

Q 9

Suppose the equation for a regression line is y = 4x + 6. If x = 5, what is the predicted corresponding value for y?

Q 10

Suppose the equation for a regression line is y = 4x + 6. If y = 12, what is the predicted corresponding value for x?