9. Evaluate the function f(x) = x + 8x - 2 at the given values of the independent variable and simplify. 14. Use the given conditions to write an equation for the line in point-slope form and in slope-intercept form. a. f(4) b. f (x + 3) c. 1(-x ) Passing through (2, - 8) and perpendicular to the line whose equation is y = 7x + 1 a. f(4) = (Simplify your answer.) Write an equation for the line in point-slope form. b. f (x + 3) = (Simplify your answer.) c. 1(-x) = (Simplify your answer.) (Simplify your answer. Use integers or fractions for any numbers in the equation.) Write an equation for the line in slope-intercept form. Simplify your answer. Use integers or fractions for any numbers in the equation.)