UPSC NDA Math Model Paper 4

To find the area of the triangle bounded by the sides x = 0, y = 0 and x + y = 2,
Draw the graph: First find the point of intersection.
When x = 0 then y = 2,
when y = 0, x = 2.
So, (0,2 ) and (2, 0) are the point of intersection Ares of Triangle OAB=

1

2

×AO×BO
=

1

2

×2×2
= 2 Square units.