How do you find the equation of a line with points -1 -6 and -3 -5?

There are several ways and one of the ways is as follows:-

Let the coordinates be (x1, y1) and (x2, y2) for (-1, -6) and (-3, -5)

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

(y--6)/(-5--6) = (x--1)/(-3--1)

(y+6)/(1) = (x+1)/(-2)

y+6 = -1/2x -1/2

y = -0.5x-6.5

The above equation can be written in the form of x+2y+13 = 0

Remember that a minus minus is equal to a plus so for instance -5--6 = 1