Question

Which function has the following domain and range? Domain: {-7, -3, 0, 4, 12} Range: {5, 1, 2}

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Answer 1

Answer: Choice A

Reason:

The domain is the set of allowed x inputs. The range is the list of possible y outputs. Each point is of the form (x,y)

For instance, the point (4, 1) means x = 4 is in the domain and y = 1 is in the range. Use the same idea for the other points for choice A.

• We can rule out choice B since x = -5 is not in the domain. Focus on the point (-5,4).
• Choice C is ruled out since x = -4 is not in the domain. Focus on the point (-4, 5)
• Choice D is ruled out since x = -5 is not in the domain. Focus on the point (-5,2)