The line $y = 2x$ passes through which of these points?

The line $y = 2x$ passes through which of these points?
  1. $(2,2)$
  2. $(3,6)$
  3. $(4,2)$
  4. $(1,0)$

Solution

Check: $y = 2(3) = 6$, so $(3,6)$ lies on $y=2x$.

Asked in: IMO

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