Simultaneous+Patterns

Simultaneous Equations Practice Assessment (Criterion B)

Question 1) x+y=4; x-y=-2 Question 2) x+y=8; x-y=-2 Question 3) x+y=12; x-y=-2 What is the answer to question 4? Level 1-2) What pattern do you see? Level 3-4) What is the general rule? Level 5-6) What conclusions can you draw? Level 7-8) Prove your rule.