NEW! Algebra Essentials Online Course
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!
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.
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BEGINNER: Identifying Functions Worksheet #1-3
EXPERIENCED: Same worksheet, #5-6
ADVANCED: Same worksheet, #4