Identifying Functions

Spot the function

You will generally have at least one question about identifying functions on your GED math test. Good news, this is one of the easiest algebra concepts out there!

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LEARN IT

A function is defined as a mathematical relationship in which each input value (x) is mapped to one and only one output value (y). Think of it like this, in a function, the x's are faithful. Each x value can only be paired with one y value.

Watch the Virtual GED Class video below for a complete explanation and tons of worked example problems.

PRACTICE IT

WORKED EXAMPLES

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Challenge 1

Challenge 2

Challenge 3

Challenge 4

Challenge 5

Challenge 6

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