6.PFA.3a- Algebra Vocabulary Formative

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What is a Coefficient?

Back

A coefficient is a numerical factor in a term of an algebraic expression. For example, in the term 3x, 3 is the coefficient.

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What is a Variable?

Back

A variable is a symbol used to represent an unknown value. Common variables include letters like x, y, t, and r.

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What is an Algebraic Expression?

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An algebraic expression is a combination of numbers, variables, and operations. For example, 4x + 2 is an algebraic expression.

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What is a Constant?

Back

A constant is a fixed value that does not change. For example, in the expression 3x + 5, the number 5 is a constant.

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How many terms are in the expression 4^2 + 2x - 7?

Back

There are 3 terms in the expression: 4^2, 2x, and -7.

Front

What is the value of the expression 2x + 3 when x = 4?

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When x = 4, the expression 2x + 3 equals 2(4) + 3 = 8 + 3 = 11.

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What does it mean to evaluate an expression?

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To evaluate an expression means to calculate its value by substituting the variables with specific numbers.

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What is the difference between an expression and an equation?

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An expression is a combination of terms without an equality sign, while an equation states that two expressions are equal, using an equality sign.

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What is a term in algebra?

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A term is a single mathematical expression that can be a number, a variable, or a combination of both multiplied together.

Front

What is the degree of the polynomial 3x^2 + 2x - 5?

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The degree of the polynomial is the highest exponent of the variable, which is 2 in this case.