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✒️FUNCTIONS

Which of the following does not belong to the group?

• A. f(x) = 4x²
• B. f(x) = 4x+1
• C. f(x) = x + 4
• D. f(x) = 4x

• Among the given choices, choice (A) is only different because it is an example of a quadratic function in which its highest degree is 2. Choice B, C and D are linear functions.

• Graphing this given functions, Choice (A) only shows a parabola, which is different to each linear function that shows a line.

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