List by letter all relations that are not functions. a. {(7, 5), (8, 5), (9, 5)} b.
Question:
List by letter all relations that are not functions.
a. {(7, 5), (8, 5), (9, 5)}
b. {(5, 7), (5, 8), (5, 9)}
c.
d. x2 + y2 = 100
e.
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