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1. What is the equation of the midline of the sinusoidal function

Answer:
y = 2
Step-by-step explanation:
The maximum of this function is 5 and the min. is -1. Thus, the range is [-1, 5]. The midpoint of this range is the y-value of the midline:
-1 + 5
--------- = 2
2
Thus, the equation of the midline is y = 2.