The range of y = acosx + d is -k 0. The values of a and d are: O A. a = YNYN XN 1I B. a = k = C. a= O D. a = =N A cosine curve has a maximum point at (3, 14). The nearest minimum point to the right of this maximum point is (8, 2). Which of the following is a possible equation for this curve? A. y = 6cos T (x + 3) +8 B. y = 6cos 27 (x -3) +8 C. y = 6cos - (x + 3) +8 D. y = 6cos = ( x - 3) +8 Use the following information to answer the next question. The graph shows how the height of a bicycle pedal changes as the bike is pedalled at a constant speed. 40 Height of Pedal (cm) 18 8 O 10 20 30 Time (S) How would the graph change if the bicycle were pedalled at a lesser constant speed? A. The height of the function would increase. B. The height of the function would decrease. C. The period of the function would decrease. D. The period of the function would increase