ALG1 - Unit 2 - Algebraic Expressions and Equations - REVIEW

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. It does not have an equality sign.

Front

How do you represent 'four more than the number of books' algebraically?

Back

Let b = number of books. The expression is b + 4.

Front

What does it mean to 'increase' a number in algebra?

Back

To 'increase' a number means to add a certain value to it.

Front

How do you represent 'nine increased by the number of gallons' algebraically?

Back

Let g = number of gallons. The expression is 9 + g.

Front

What is the solution to the equation -2(7 - 4x) = 10?

Back

x = 3.

Front

What does 'three times a number increased by nine' look like in algebraic form?

Back

Let h = the number. The expression is 3h + 9.

Front

What is the first step in solving the equation 5x + 6 = 66?

Back

Subtract 6 from both sides to isolate the term with x.

Front

What error did the student make when solving the equation 5x + 6 = 66?

Back

The student multiplied by 5 instead of dividing by 5.

Front

What is the process of solving an equation?

Back

The process involves isolating the variable on one side of the equation to find its value.

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value.