Solve the following simultaneous equations: y - 2x = 6 and y + 2x = 0
Firstly, label each of our equations: y - 2x = 6 (1) y + 2x = 0 (2)Then we can rearrange (2) to get the following: y = -2x (3)Then, substitute (3) into (1): -2x - 2x = 6Which yields the result: -4x = 6Therefore: x = -1.5We can now substitute this result into any of our previous equations to get y. Therefore: y = 3
CC
Related Maths GCSE answers
All answers ▸The turning point on a quadratic function
Yesterday it took 5 cleaners 4 and ½ hours to clean all the rooms in a hotel. There are only 3 cleaners to clean all the rooms in the hotel today. How much time will it take them?
How do you find the missing angle of a Triangle?
A right angled triangle with sides 7cm and 11cm, find the hypotenuse