8.AT.C.6: Determine whether a relationship is a function by analyzing whether each input is assigned to exactly one output. a. Given a clearly defined set of input-output pairs in a table, mapping, or real-world description, determine whether the relationship is a function and explain why. b. Given a graph, identify input-output pairs and determine whether the graph represents a function.

Determine whether a relationship is a function by analyzing whether each input is assigned to exactly one output. a. Given a clearly defined set of input-output pairs in a table, mapping, or real-world description, determine whether the relationship is a function and explain why. b. Given a graph, identify input-output pairs and determine whether the graph represents a function.

Example Problems

What, if any, difficulties did you encounter filling out these tables? Explain.

Write a rule for a function,

P

, that gives the perimeter of a square in inches when the side length is

x

inches.

a. What is the value of

P(9.1)

?
b. What does it tell us about the

\text{side length}

and

\text{perimeter}

of the square?

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