What is the domain and range of {(7,2) (8,2), (9,2), (10,2)?

1 Answer
smendyka
May 3, 2017

See the solution explanation below:

Explanation:

In the set of ordered pairs {(-2, 0), (0, 6), (2, 12), (4, 18)}, the domain is the set of the first number in every pair (those are the x-coordinates): {-2, 0, 2, 4}. The range is the set of the second number of all the pairs (those are the y-coordinates): {0, 6, 12, 18}. This table describes y as a function of x.

Therefore, for this problem:

The domain is #{7, 8 , 9 , 10}#

The range is #{2}#

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