Question 1 The parabola y = f(x) = x2 + 2x - 8, cuts x-axis at the point(s) Select one: a. (2,0) only b. (0,-8) c. (-4,0) only d. (-4,0) and (2,0) Clear my choi Question 2 For a linear function f(x), f(20)=5 and f(40)=8. What is f(10)=? Select one: a. 8 b. 5 c. 7/2 d. 7. Clear Question 3 For the function y = f(x) = x2 - 4x - 1. Which one of the below is the Vertex Select one: a. V(-5,2) b. There is no Vertex c. V(2,-5) d. V(0,-1) Question 4 For the parabola y = f(x) = 3x2 - 4x + 8, which one is true Select one: a. Arms are opening upward b. Arms are opening downward c. We cannot decide d. It doesn't have any arms Question 5 The parabola y = f(x) = x2 - 2%, cuts y-axis at the point Select one: a. (4,0) b. (1,-9) c. (0,0) d. (-2,0) Question 6 For a linear function f(x), f(2)=5 and f(5)=2. What is the slope of this function? Select one: a. 2 b. 1 c. 4 d. -1 Question 7 A parabola may have Select one: a. no x-intercepts b. slope c. No y-intercepts d. 2 vertices Question 8 For a linear function f(x), f(5)=30 and slope is -2. What is f(3) =? Select one: a. 34 b. We cannot decide c. 2 d. -5 Question 9 For a function f(x), f(2)=4 and f(4)=8. What is the slope of this function? Select one: a. 1 b.4 c. 8/5 d. Not enough information Question 10 Which one of the following functions is a linear function? Select one: a. y = x2 - 4x - 15 b. None c. y = -5x + 71 d. y = 3x4 - 53x + 4