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First things first it will definately be useful to make a quick sketch of the x-y axes, the two points, and roughtly what the perpendicular bisector will look like.

This kind of question ...

The phenomenon this question relates to is the photoelectric effect, and it can only be explained using Einstein’s photon model of light.
Electromagnetic waves are emitted in discret...

Whilst I didn't study law at A-level I now study LLB Law at the University of Liverpool and find it exciting and stimulating. I would love to have the opportunity to give A-Level students the knowledge...

Maths has always been a passion of mine from a young age. I've always enjoyed helping others with their maths as I find it extremely stimulating.

How you should approach a question of this type in an exam
Say you are given two lines: L₁ and L₂ with equations and you are asked to deduce whether or not they...