Which set of ordered pairs is a function? For each function, name the set of inputs (domain) and the set of outputs (range).
a. (7, 9), (7, 11), (7, 13)
b. (7, 9), (9, 11), (11, 13)
A) b is a function. Domain is {7, 9, 11}, range is {9, 11, 13}.
B) a is a function. Domain is {7}, range is {9, 11, 13}.
C) a is a function. Domain is {7}, range is {9, 11, 13}.
b is a function. Domain is {7, 9, 11}, range is {9, 11, 13}.
D) b is a function. Domain is {7}, range is {9, 11, 13}.
a is a function. Domain is {7, 9, 11}, range is {9, 11, 13}.
E) a and b are not functions.
A) b is a function. Domain is {7, 9, 11}, range is {9, 11, 13}.
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