Answer:
AB :

PT :

Explanation:
The line AB passes through A(-2,4) and B(-8,-6) points.
Therefore, the slope of the line AB will be
(Answer)
Again line PT passes through P(3,-1) and T(8,-2) points.
Therefore, the slope of the line PT will be
. (Answer)
Here we have applied the formula of slope of a straight line passing through the points
and
as given by
.