Answer:
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Yes, y is a function of x in the points (5,6), (4,6), (2,6), and (1,6).
In each of these points, the value of y (6) is determined by the value of x (5, 4, 2, or 1). This means that there is a direct relationship between x and y, and y can be expressed as a function of x.
Step-by-step explanation:
