The line AB has equation 3x +5y = 7 . Find the gradient of AB.
Firstly, you should change the equation into the form y=mx+c where m is the gradient and c is the y-intercept. This can be done by subtracting 3x from each side of the equation to give 5y=-3x+7. Then dividing each side of the equation to give y=-3/5x+7/5. By comparing this with the general equation y=mx+c, you can see that m= the gradient= -3/5.
CG
Related Maths GCSE answers
All answers ▸Factorise and solve 4(x)^2-2x=0
find the gradient of the line y=2x^2-12x+16 at the coordinates (5,6)
Make y the subject of the following equation: 2x - y = 5
The value of a car depreciates by 35% each year. At the end of 2007 it was £5460. Work out the value of the car at the end of 2006.