Functions

What is the difference between a relation and a function?

• In a relation, the x-value cannot repeat.

• In a function, the y-value cannot repeat.

• In a function, the x-value cannot repeat.

• In a relation, the y-value cannot repeat.

Tags

CCSS.8.F.A.1

Which of the following are considered functions? Hint: there MAY be more than one answer. Choose carefully!!

• {(3, 2), (4, -2), (7, -2), (0, 0), (5, 0)}

• {(5, -1), (5, 6), (-4, 1), (0, 2), (-3, 9)}

• {(-1, 6), (10, 1), (-4, -4), (0, 3)}

• {(0, 2), (-1,0)}

Tags

CCSS.8.F.A.1

A _________ is a set of ordered pairs.

Tags

CCSS.8.F.A.1

______________: for every input there is exactly one output (for every x there is just one y)

Tags

CCSS.8.F.A.1

Give an example of a letter, that when drawn on a graph, could be considered a function.

Is this a function?

• Yes

• No

Is this a function?

• Yes

• No