Find the equation of the straight line joining points (-1, -4) and (2, 5)
- Draw sketch of line 2. Find gradient using m=(y2 - y1)/(x2 - x1)= 5--4/2--1=9-3=3 3. Choose one of the points and call it (a,b). I'll pick (2,5) because there's no negaitves. 4. Sub into equation y-b=m(x-a) y-5= 3(x-2) 5. Simplify y - 5 = 3x - 6 y = 3x - 1
BM
Related Maths GCSE answers
All answers ▸Factorise x^2 + 4x + 4
Solve the simultaneous equations: x + 2y = 13, 4x - 3y = 8.
A 4 digit number is picked. It's second digit is a prime number, it must be even and it must be greater than 5000. How many possible numbers can be picked?
The sides of an equilateral triangle are given by the expressions x+y, 2y-1 and 3y-2x+1. Find the values of x and y.