UPSEE Solved Model Paper 5

since, 3x + 4y - 1 = 0 is the perpendicular bisector of AB, therefore B is the image of A in this line
∴ Coordinates of B are
= (−

7

5

,−

6

5

)
similarly coordinates of C are (−

3

5

,

4

5

)
∴ Area of ΔABC =

1

2

|

1	2	1
− 7 3	− 6 5	1
− 3 5	4 5	1

|
=
=

1

2

|(−2+

8

5

−

46

25

)|
=

28

25

sq unit