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1. The process of finding dy/dx, when y = f(x) is known, is called. a. increment c. differentiable function b. differentiation d. slope of a curve 2. If a variable x changes from one fixed value x to another x, , the difference x, - x, is called an of X. a. normal line c. slope of a curve b. increment d. differentiation 3. A point such as E where the slope changes from + to 0 to +, or - to 0 to - , is called. a. critical value c. maximum point b. critical point d. point of inflection with horizontal tangent 4. The f(x) is a maximum at x = a, if f '(a) = 0 and f" (a) is a. negative c. positive b. zero d. one 5. If dy is the error in y, the ratio dy/y is called the in y. a. percentage error c. relative error b. error d. approximate error 6. What is dy/dx of y = x- - 5x? a. y '= 2x - 5 c. y'= -5 b. y' = 2x d. y' = x - 5 7. Find dy/dx of y = 8x - x , when x = 2. a. y'= 6 c. y'= -4 b. y' = 8 d. y' = 4 8. Find dy/dx of y = x , when x = - 3. a. 9 c. 27 b. -9 d. -27 9. Find y ' of y = x (2x - 2). a. y' = 8x -4x c. y ' = 4x - 2x b. y' = 2x - 2x- d. y' = 2x - 2 10. Find y ' of y = 3x- - 2x + 5. a. y'= 3x - 2 2 c. y ' = 3x + 5 b. y' = 6X - X d. y ' = 6x - 2