2.1 Modeling With Expressions Answer Key
Question: Expression
(Expresión)
Answer: mathematical phrase that contains operations, numbers, and/or variables; it is composed of one or more terms
Question: Algebraic Expression
(Expresión Algebraica)
Answer: mathematical expression containing at least one variable (ex. 2x + 12 = 36)
Question: Numerical Expression
(Expresión Numérica)
Answer: mathematical expression containing only numbers, no variables
Question: Term
(Término)
Answer: parts in an expression that are separated by plus or minus signs (ex. in the expression 3x - 6y + 9z, there are three terms: 3x, 6y, and 9z); terms can be variables and coefficients or constants (numbers by themselves)
Question: Coefficient
(Coeficiente)
Answer: the numbers that are directly attached to variables (ex. in the equation 5x + 3y, 5 and 3 are the coefficients)