Week 1 review

Front

What is a variable?

Back

A letter that represents an unknown number.

Front

What is the coefficient in the expression -b + 78?

Back

-1.

Front

Solve the inequality: -3x − 4 < 5.

Back

x > -3.

Front

When do you flip the inequality sign?

Back

When you multiply or divide by a negative.

Front

Solve the inequality: d - 4 < -3.

Back

d < 1.

Front

What is an inequality?

Back

A mathematical statement that compares two expressions using <, >, ≤, or ≥.

Front

What does it mean to solve an inequality?

Back

Finding the range of values that make the inequality true.

Front

What is the solution set of an inequality?

Back

The set of all values that satisfy the inequality.

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 greater or less than another.

Front

What is the graph of an inequality?

Back

A visual representation of the solution set on a number line or coordinate plane.