Inequalities

Inequalities

• An inequality tells you when one value or expression is bigger ot smaller than another value
• You can represent inequalities o a number line

Solving inequalities

• You can solve an inequality in exactly the same way as you solve an equation
• The solution has the letter on its own on one side of the inequality and a number on the other side

Golden rule

• If you multiply or divide both sides of an inequality by a negative number you have to reverse the inequality sign

Working it out

• Once you’ve identified it’s an inequality and not an equation don’’t use an = sign in your answer
  • The solution has the letter on its own on one side and a number on the other
• You could also use set notation to write your answer

Integer solutions

• You might need to write down all the integer solutions that satisfy an inequality
• Integers are positive or negative whole numbers including 0