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14 cards from this deck
Rule that produces one output value for each input value
Input, rule, output
Set of all possible input values
Set of all actual output values
Visual way to show how inputs connect to outputs
Each input has exactly one output
Each domain element maps to one and only one range element
(input, output)
Set of possible outputs
Range is always a subset of codomain
f(x)=...f(x) = ...f(x)=..., f:x→...f: x \to ...f:x→..., y=...y = ...y=...
Substitute x=3x = 3x=3: f(3)=2(3)+4=10f(3) = 2(3) + 4 = 10f(3)=2(3)+4=10
No two distinct couples have the same input
Input (x-value)
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