Chapter 3: Equations and Inequalities

Question 1

What are the 3 ways to solve simultaneous equations?

Answer 1

• Substitution
• Elimination
• Seeing where they cross on a graph

Question 2

How do you solve a quadratic inequality?

Answer 2

• rearrange
• Solve the quadratic
• Do a rough sketch of the graph
• Use your sketch to find the values

Question 3

If the quadratic is greater than 0, do we look above or below the graph for the solution?

Answer 3

Above, we will get 1 inequality

Question 4

If the quadratic is less than 0, do we look above or below the graph for the solution?

Answer 4

Below, we will get two separate inequalities