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Question
Answer the following:
Identify the following relation is the function? If it is a function determine its domain and range.
{(2, 1), (4, 2), (6, 3), (8, 4), (10, 5), (12, 6), (14, 7)}
Solution
Let f = {(2, 1), (4, 2), (6, 3), (8, 4), (10, 5), (12, 6), (14, 7)}
f is a function because every element of domain has only one image.
Domain of f = {2, 4, 6, 8, 10, 12, 14}
Range of f = {1, 2, 3, 4, 5, 6, 7}
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