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?
Examples of what pupils should know and be able to do
Solve simultaneous linear equations such as:
5x + y = 17
5x – y = 3
x + 6y = 101
x + 3y = 56
In 5 years' time Ravi’s father will be twice as old as Ravi. In 13
years' time, the sum of their ages will be 100. How old is Ravi now?