Evaluating Algebraic Expressions

Front

Evaluate y - 17 if y = 28.

Back

11

Front

Name the variable in the expression: 20 - 2x.

Back

x

Front

Evaluate 7a - 6 if a = 3.

Back

15

Front

Evaluate n^3 if n = 5.

Back

125

Front

Evaluate 9b + 15 if b = 3.

Back

42

Front

What is an algebraic expression?

Back

An expression that contains numbers, variables, and operations.

Front

What is a variable in algebra?

Back

A symbol (often a letter) that represents an unknown value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting variables with numbers.

Front

What is the coefficient in the expression 2x + 3?

Back

2 (the number multiplying the variable x).

Front

What is the constant in the expression 5x + 7?

Back

7 (the number that does not change).