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Question 7 -

7. Determine the coordinates of the point(s) of the intersection of the given linear-quadratic system (A - 5 marks ) y = 3x - 16x + 37 andy = 8x + 18. Which of the following quadratic functions will have a maximum value? Explain how you know. a) y = - x- + 7x c) f(x) = -4(x + 2) (x- 3) b) f(x) = 3(x - 1)2 - 4 d) g(x) = 4x2 + 3x -59. Use the vertical line test to determine whether each relation is a function. Justify your answer. ( C- 4 marks ) a) yl 6 I 4 2. X 2 4 6 b) y -( x 4) +3 4 A NO N'S X