Question

Lines x – y = 0, x + y = 0 and X-axis are concurrent at:

• A. A point in X-axis
• B. A point on Y-axis
• C. Origin
• D. Quadrant I

Answer 1

The correct option is C Origin

Equations of the lines are:
x – y = 0 . . .(i)
x + y = 0 . . .(ii)

Solving (i) and (ii), we get x = 0, y = 0

So, both the lines are concurrent at the origin.

The equation of X-axis is y = 0

Thus, the lines x - y =0, x + y = 0 and the X axis meet at the origin.