Step 10 Objective
Solve a pair of simultaneous linear equations by eliminating one variable; link a graphical representation of an equation or pair of equations to the algebraic solution.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
What methods do you use when solving a pair of simultaneous linear equations?
What helps you to decide which method to use? Talk me through a couple of examples and explain why you chose the method you did.
Are there any other solutions to this pair of simultaneous equations? How
do you know?
Is it possible for a pair of simultaneous equations to have two different
solutions? How do you know?
How does a graphical representation help you to know more about the number of
solutions?