fine the slop of the line between the coordinates (-6,-13) and (3,-1)
1.3/4
2.-3/4
3.4/3
4.-4/3
I think it's either 1 or 3
m = tan θ = ( y2 - y1 ) / ( x2 - x1 )
In this case.
x1 = - 6 , y1 = - 13 , x2 = 3 , y2 = -1
m = ( y2 - y1 ) / ( x2 - x1 ) =
[ ( - 1 ) - ( - 13 ) ] / [ 3 - ( - 6 ) ] =
( - 1 + 13 ) / ( 3 + 6 ) =
12 / 9 = 3 ∙ 4 / 3 ∙ 3 = 4 / 3