(Q5)Find the slope of AB ,where.

(i) A(2,1) , B(2,6)  (ii) A(-4,2) , B(-4,-2)   (iii) A(-2,8) , B(-2,-2)

(i)Given A(2,1) , B(2,6)

Slope,m =
y2 - y1
x2 - x1
    =
-
2 - 2
 =
0
 =∞

(ii)Given A(-4,2) B(-4,-2)

Slope,m =
y2 - y1
x2 - x1
    =
- -
-4+4
 =
-
0
 =∞

(iii) Given A(-2,8) B(-2,-2)

Slope,m =
y2 - y1
x2 - x1
    =
- -
-2+2
 =
-
0
 =∞