Principles of Algebra Mid term Study Guide

Front

Evaluate the expression: 5x when x = 2

Back

10

Front

Evaluate the expression: y - 15 when y = 5

Back

-10

Front

Back

5

Front

Combine the like terms: -7y + 3y

Back

-4y

Front

Apply the Distributive Property: 5(a + b + 8)

Back

5a + 5b + 40

Front

What is an algebraic expression?

Back

An expression that contains numbers, variables, and operations.

Front

Define 'like terms'.

Back

Terms that have the same variable raised to the same power.

Front

What is the Distributive Property?

Back

a(b + c) = ab + ac, distributing a across the sum.

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 difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not.