Writing and Evaluating Algebraic Expressions

Front

What are variables in an algebraic expression?

Back

Variables are symbols that represent unknown values, typically denoted by letters such as x, y, or z.

Front

Identify the variables in the expression: 3x + 4y - 7

Back

x and y

Front

What is a constant in an algebraic expression?

Back

A constant is a fixed value that does not change, such as numbers like 5, -3, or 12.

Front

Which of the following is the constant in the expression 15p + 12?

Back

12

Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables into the expression and perform the arithmetic operations.

Front

Evaluate the expression when x = 5 and z = 4: z^2 - 2x

Back

6

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and perform operations to make it easier to understand or solve.

Front

Back

10

Front

What is the difference between an expression and an equation?

Back

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