tolong jawab pleaseeeeeeeeeeee

a. m= y1 - y2
----------
x1 - x2
= 3 - (-5)
----------
4 - (-2)
= 8
----------
8
= 1


b. m=y1 - y2
----------
x1 - x2
= -1 - (-3)
----------
-1 - 7
= 2
----------
-8
= -1
---
4
atau -0.25

Maaf bila salah