11 Evaluating variable expressions pg 41

Front

Evaluate 2a + 4b if a = 10 and b = 6

Back

44

Front

Evaluate the expression xy for x = −4 and y = 4

Back

-16

Front

Evaluate 4h + 2g + 4 if g = 3 and h = 9

Back

46

Front

Evaluate bc + 5a when a = 3, b = 4, and c = -6

Back

-9

Front

Evaluate x² - xy if x = 8 and y = -3

Back

88

Front

What is a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the order of operations in mathematics?

Back

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is a coefficient in an algebraic expression?

Back

A numerical factor in a term of an algebraic expression.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.