Chapter 4 Test Review: Equations and Inequalities

Front

What does the inequality k < 3 represent on a number line?

Back

The values of k that are less than 3 are represented by an open circle at 3 and a line extending to the left.

Front

How do you solve the inequality 6t + 4 ≤ -2?

Back

Subtract 4 from both sides to get 6t ≤ -6, then divide by 6 to find t ≤ -1.

Front

What are operations that undo each other called?

Back

Inverses.

Front

Back

Front

What is the solution to the inequality -9a - 1 < 26?

Back

Add 1 to both sides to get -9a < 27, then divide by -9 (remember to flip the inequality) to find a > -3.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is less than, greater than, less than or equal to, or greater than or equal to the other.

Front

What does the symbol < mean in an inequality?

Back

It means 'less than'.

Front

What does the symbol > mean in an inequality?

Back

It means 'greater than'.

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows that one expression is not equal to the other and can be less than or greater than.

Front

How do you graph the inequality a < 3?

Back

Draw an open circle at 3 and shade to the left to indicate all values less than 3.