Function or not function

Function or not function

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  Function or NotFunction SUBTITLE
• 2.
  The following summarizeshow to classify correspondences as relation only or functions. Relation only Function
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  Set of OrderedPair Relation Only Function 1. A = { (1, 4), (1, 8), (1, 9), (1, 13)} 2. B = {(3, 9), (1, 0), (5, -2), (3, -1)} 3. C = {(2, 7), (-5, 0), (4, -2), (-5, -1)} • Domain is paired with more than one element 4. D = {(4, 9), (1, 7), (-5, -2), (5, -1)} 5. E = {(4, 9), (6, 9), (5, 9), (3, 9)} 6. B = {(3, -1), (1, 6), (5, 3), (0, -1)}
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  To determine whethera graph is a function or not, use a vertical line test.
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  Graphs Relation Only Function
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  Domain and Range Domainrefers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.
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  Example 3. Domain: all real numbers Range: all real numbers Example 4. Domain: x ≥ 0 Range: all real numbers
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  Example 4. Domain:x ≥ 0 Range: y ≥ 0 Example 5. Domain: all real numbers except x = 2 Range: all real numbers except y = 0
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  Example 5. Domain:-3 ≥ x < 3 Range: -4 ≤ y ≤ -2 Example 6. Domain: 1 ≥ x > -3 Range: -4 ≤ y < -3