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Functions in algebra explained with a visual example of a function machine and its corresponding notation.

A diagram illustrating functions in algebra, showing a "function machine" with input, operations (multiply by 5, add 3), and output, alongside the function notation f(x) = 5x + 3.

A diagram illustrating functions in algebra, showing a "function machine" with input, operations (multiply by 5, add 3), and output, alongside the function notation f(x) = 5x + 3.

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