Algebra Lab Semester 1 Review

Front

What is the overall change in Alex's checking account after writing checks for $35 and $45 and making a deposit of $180?

Back

$100 increase

Front

What is the result of the expression -5 - -25?

Back

20

Front

Solve for a: -15 = 5a + 12 - 2a + 6

Back

a = -11

Front

Solve the inequality: |y - 4| ≥ 8

Back

y ≤ -4 or y ≥ 12

Front

Solve the inequality: 3x - 10 > 2

Back

x > 4

Front

What is the definition of an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

What does it mean to solve an absolute value equation?

Back

To solve an absolute value equation, you find the values of the variable that make the expression inside the absolute value equal to the positive and negative of the number on the other side.

Front

What is the formula for calculating the change in an account balance?

Back

Change = Deposits - Withdrawals

Front

What is the definition of a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value in mathematical expressions or equations.

Front

What does it mean to isolate a variable in an equation?

Back

To isolate a variable means to manipulate the equation so that the variable is on one side and all other terms are on the opposite side.