MCF3M1 Name: MCF3M1 Name: 19. From the graph in #18, what are the coordinates of the x-intercepts? THINKING/ INQUIRY a) (1,0) b) (5,0) True or False: Determine if each question is true or false. One mark per question. c) Both (a) and (b) d) None of the above 26. When we use the discriminant b' - 4ac to determine the number of roots in the quadratic equation -2x3 - 3x - 5 = 0, we can conclude that there are no roots. 20. From the graph in #18, what are the coordinates of the y-intercept? a) (5,0) 27. Without graphing, we can determine that the quadratic equation g(x) = 3(x - 6)? -3 has b) (3,-4) one root. c) (0,5 d) None of the above 28. A parabola with a vertex of (3, 5) that passes through the point (1, 1) has the equation y= - (x-3)2 +5 21. From the graph in #18, what is the axis of symmetry? a) x=0 29. When we complete the square in f(x) = 9x" + 36x - 2, we get the vertex form equivalent b) x=1 f(x) =9(x + 4)2 -38. c) x=5 d) x=3 30. In the equation f(x) = (x + 6)"+ 7, the vertex is a maximum value. 22. Write the equation f(x) = -3x? + 24x + 16 in vertex form. 31. The zeroes of f(x) = (x -6)2 -4 are x=8 and x=4. a) f(x) =-3(x +4)2-32 b) f(x) = -3(x - 4)2 -64 c) f(x) = -3(x - 4)? +64 32. When we convert f(x) = 12x2 - 19x + 5 into factored form, we get f(x) = (3x - 1)(4x - 5). d) f(x) = -3(x +4)2 + 48 Refer to the following graph to answer questions 33-35. 23. What is the equation, in factored form, of the following graph? a) f(x)= - (x - 2)(x -4) b) f(x)= - (x- 2)(x +4) c) f(x)= (x-2)(x -4) d) f(x)= (x+2)(x -4) 24. What are the coordinates of the vertex in f(x) = 3(x - 2)(x -12)? a) (-7, 75) b) (7, -75) c) (2, 12) 33. The Axis of Symmetry for this graph is x=-3. d) None of the above 34. The equation in vertex form that models this graph is y = 4(x - 2)? -3. 25. Which parabola does not intersect the x-axis? a) f(x) = x2 - 6x -7 35. The Range for this function is {y ER | y > 2} b) f(x) =-4(x - 8)2 + 5 c) f(x) = (7+ x)2 d) None of the above