definitions
- Algebraic expression- an expression that contains at least one variable.
- Coefficient- the number that is multiplied by the variable in an algebraic expression.
- Constant- a value that does not change.
- Equation- a mathematical sentence that shows that two expressions are equivalent.
- Inequality- a mathematical sentence that shows the relationship between quantities that are not equivalent.
- Integers- the set of whole numbers and their opposites.
- Variable- a symbol used to represent a quantity that can change.
When do you flip the inequality sign?
There is one very important exception to the rule that multiplying or dividing an inequality is the same as multiplying or dividing an equation. Whenever you multiply or divide an inequality by a negative number,you must flip the inequality sign.
There is one very important exception to the rule that multiplying or dividing an inequality is the same as multiplying or dividing an equation. Whenever you multiply or divide an inequality by a negative number,you must flip the inequality sign.