Algebraic Functions
 If something is a function, it means that for every input, there is only one _______.
 The vertical line test allows you to test whether or not something is a function because __________.
 The following graph _______ a function.
 The following graph _______ a function.
 If the graph in problem 4 was rotated 90 degrees, it _____ be a function.
 In a relation, there can be _____ output for a given input.
 The picture in problem 3 ___ a function.
 The horizontal line test ____ an effective test for a function because __________.
 This __ a function.

Watch this helpful video on functions and relations:
CK12 Foundation: Relations and Functions
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