Search over 10,000 free study notes

In order to solve this question we need to remove one variable, either X or Y. Let us remove X in this case. The coefficents of X are 2 and 3. Their lowest common multiplte is 6. We can therefore get b...

This question may seem difficult but we just have to remember the rules of parametric differentiation and the chain rule.
The chain rules states that dy/dx=dy/dz*dz/dx where z is a third variable. Pa...

These kinds of questions often come up in GCSE papers and involve algebraic manipulation. The key to answering these questions is finding a common factor in the numerator and denominator that can be cance...

To answer this question, we must use our knowledge of integration and differentiation. 
First, we look at the information given to us. We have been told that the gradient of the curve is given by dy/...

Equation one: 3y - 7x = 15

- Double it and re arrange   3y - 7x = 15 goes to 3y = 7x + 15 goes to 6y = 14x + 30 we name this equation 3

Equation two: 2y = 4x +12

...