Question

What is the equation of the line that passes through the point (4,1) and (8, -4)?

Answer 1

y= -5/4x+

Explanation:

find the gradient first ∆y/∆5x

-4-1/ 8-4

=-5/4

assume one of the points to be x, y

y-1/ x-4 =-5/4

cross multiply

4y-4=-5x+20

4y= -5x+20+4

divide both sides by 4

y= -5/4x+