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Which of the relations given by the following sets of ordered pairs is a function?

Select one:

a.
{(2,4),(2,6),(2,8),(2,10),(2,12)}


b.
{(−5,−4),(−4,−3),(−3,−2),(−4,−5),(−2,−1)}


c.
{(0,3),(−6,8),(−3,5),(0,−3),(7,11)}


d.
{(8,1),(−4,1),(3,5),(0,4),(−1,2)}

Sagot :

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Answer:

d.{(8,1),(−4,1),(3,5),(0,4),(−1,2)} - function

Step-by-step explanation:

a.{(2,4),(2,6),(2,8),(2,10),(2,12)}

Each value of x goes to more than one value of y- this is not a function

b. {(−5,−4),(−4,−3),(−3,−2),(−4,−5),(−2,−1)}

The value of x at -4 goes to more than one value of y- this is not a function

c.{(0,3),(−6,8),(−3,5),(0,−3),(7,11)}

The value of x at 0 goes to more than one value of y- this is not a function

d.{(8,1),(−4,1),(3,5),(0,4),(−1,2)}

 Each value of x goes to only one value of y- this is a function

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