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What is the domain and range of {(3,7),(3,8),(3,-2),(3,4),(3,1)}?

Answer 1

Genesis Allen

Domain: #x = 3#
Range: #y in {7, 8, -2, 4, 1}#

Assuming the given set represents values of #(x,y)# where #x# is being mapped into #y#.

#color(white)("XXXX")#The domain is the set of all valid values for #x#.

#color(white)("XXXX")#The range is the set of all valid values for #y#

Note: This explicit set mapping is not a function (since the same value of #x# maps into multiple values of #y#)

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Answer 2

Nathan Axel

Domain: {3} Range: {7, 8, -2, 4, 1}

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.