Question:
The point of the form (a, – a) always lies on the line
(a) x = a
(b) y = – a
(c) y = x
(d) x + y = 0
Solution:
(d) Taking option (d), x + y = a + (-a) = a – a = 0 [since, give point is of the form (a, -a)]
Hence, the point (a, – a) always lies on the line x + y = 0.
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