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What type of expression is 6y + 4?

  1. Function

  2. Polynomial

  3. Inequality

  4. Equation

The correct answer is: Polynomial

6y + 4 is a polynomial expression because it contains two or more terms which are added or subtracted from each other. In this case, the terms are 6y and 4. A function is a relation where each input has exactly one output, so it is not the correct type of expression for 6y + 4. An inequality is a mathematical statement that compares two quantities using <, >, ≤, ≥, or ≠, so it is not the correct type of expression for 6y + 4. An equation is a mathematical statement that shows that two expressions are equal, so it is not the correct type of expression for 6y + 4.