MCF3M1 Name: MCF3M1 Name: 7. Factor 121x3- 81. a) (11x + 9)(11x -9) 14. Consider the following graph. Which equation does not match the graph? b) (11x -9)2 c) (11x +9)2 a) y= (x-1)(x -3) d) None of the above b) y = (x-2)2 -1 c) y = x2 - 4x + 3 8. Use finite differences to determine if the following function is linear or quadratic: d) None of the above a) Linear, first differences equal 3 -1 - 6 b) Quadratic, second differences equal -3 0 6 c) Linear, second differences equal -3 15 d) Neither, none of them are equal W NHC 21 24 . Which of the following is NOT a transformation on the graph of y= -2(x+4)2-7 ? 15. From the graph in #14, what are the correct Domain and Range? a) Reflection in the x-axis a) D= {x ER], R= {y ER |ys2} b) Horizontal translation 4 units to the left b) D = (X ER], R= (yER ly23} c) Vertical translation 7 units up c) D= {XER], R= (yERly2-2} d) Vertical stretch by a factor of 2 d) D= (x ER}, R= {yER | y2-1} 10. Which characteristics are TRUE for the graph of y= -2(x+4)2-7 ? 16. What is the missing factor in 10al -11a -6 = (5a + 2)(_ a) Vertex is (-4, -7), opens down _J? b) Vertex is (-4,-7), opens up a) (3a -2) b) (2a + 3) c) Vertex is (4,-7), opens down d) Vertex is (4,-7), opens up c) (2a -3) d) (3a + 2) 11. What is the axis of symmetry in y= -2(x+4)2-7 ? 17. Write the function f(x) = - (2x + 3)(4x - 5) in standard form. a) x=4 b) x=-4 a) f(x) = 8x2 -2x + 15 c) x=-7 b) f(x) = - 8x2 - 2x + 15 d) x=0 c) f(x) = 8x2 - 6x + 15 d) f(x) = 8x2 - 2x + 1 12. Expand and simplify: 3x(2x - 1) - 4x(5x + 3) - (x2 -4x) + 3. 18. Consider the following graph. What are the coordinates of the vertex? a) -8x2 - 11x + 3 b) -13x3 - 11x + 3 c) 8x2 - 17x + 3 a) (1,0) b) (5,0) d) -15x - 11x + 3 c) (0,5) d) (3,-4) 13. Factor 5m3-10m+5 a) 5(m -1)(m - 2) b) 5(m - 1)2 c) 5(m - 1)(m + 2) 3 -2 1 d) 5(m + 1)(m -2)