If the following three lines pass through the same point in the X – Y plane, then find the value of (a + b).

3x – 2y = 1

5x + 4y = 9

ax + by = 3

0

1

2

3

Correct Answer : D

simplifies to

If ax +by + c = 0 and dx + ey + f = 0 represent the same straight line then which of following is necessarily satisfied?

A rhombus has sides 10cm each and the circle that is inscribed in it has radius 1.5cm. What is the area of the rhombus in cm^{2}