Question

find the equation of line passing through 1, 2and - 1,5​

Answer 1

Formula:

(y-y1)/(y1-y2)=(x-x1)/(x1-x2)

Solution:

(y-2)/(2-5)=(x-1)/{1-(-1)}

or, (y-2)/(-3)=(x-1)/2

or, 2*(y-2)=(-3)*(x-1)

or, 2y-4=-3x+3

or, 3x+2y-7=0

the equation of line passing through (1,2) and (-1,5) is

3x+2y-7=0