Question

Question 18
The point of the form (a, a) always lies on:

A) x-axis
B) y-axis
C) The line y = x
D) ​​​​​​​The line x + y = 0​​​​​​​

Answer 1

The answer is C.
The given point (a, a) has the same value of x and y-coordinates.
Therefore, the point (a, a) must lie on the line y = x.