What is the equation of the line passing through the points (4, -5) and (2,-7)?

1 Answer
Aug 2, 2018

y=x-9

Explanation:

First you need to find the gradient of the line

m=(-5+7)/(4-2)=2/2=1

Then, using the point gradient formula

y-y_1=m(x-x_1)
where (x_1,y_1) can be either point and m is the gradient

So, I'm using the point (4,-5)

(y+5)=1(x-4)

y+5=x-4

y=x-9