Determining Whether a Relation Is a Function

Which relation is not a function?

• {(1,5),(2,6),(3,6),(4,7)}

• {(4,7),(2,1),(-3,6),(3,4)}

• {(-1,6),(1,3),(2,5),(1,7)}

• {(-1,2),(0,5),(5,0),(2,-1)}

Tags

CCSS.8.F.A.1

Which table represents a function?

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Tags

CCSS.8.F.A.1

Which relation represents a function?

• {(0,3),(2,4),(0,6)}

• {(-7,5),(-7,1),(-10,3),(-4,3)}

• {(2,0),(6,2),(6,-2)}

• {(-6,5),(-3,2),(1,2),(6,5)}

Tags

CCSS.8.F.A.1

Given the relation R = {(-2,3),(a,4),(1,9),(0,7)}. Which replacement for amakes this relation a function?

• 1

• -2

• 0

• 4

Tags

CCSS.8.F.A.1

Given the relation {(8,2),(3,6),(7,5),(k,4)}, which value of k will result in the relation not being a function?

• 1

• 2

• 3

• 4

Tags

CCSS.8.F.A.1

The relation defined by the set of ordered pairs {(0,2),(-2,2),(1,4),(4,1),(0,-1)} is not a function. Which of the ordered pairs listed below, if omitted from this relation, will make the resulting set a function?

• (-2,2)

• (1,4)

• (4,1)

• (0,-1)

Tags

CCSS.8.F.A.1

A function is shown in the table above. If included in the table, which ordered pair, (-4,1) or (1,-4), would result in a relation that is no longer a function?

• (-4,1)

• (1,-4)

Tags

CCSS.8.F.A.1

A mapping is shown in the diagram above.

This mapping is

• a function, because Feb has two outputs, 28 and 29

• a function, because two inputs, Jan and Mar, result in the output 31

• not a function, because Feb has two outputs, 28 and 29

• not a function, because two inputs, Jan and Mar, result in the output 31

Tags

CCSS.8.F.A.1

Which relation does not represent a function?

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Tags

CCSS.8.F.A.1

Which graph does not represent a function?

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