A point lies on the $x$-axis and is $9$ units away from the origin in the negative direction. Its…

A point lies on the $x$-axis and is $9$ units away from the origin in the negative direction. Its coordinates are:
  1. $(0,-9)$
  2. $(-9,0)$
  3. $(9,0)$
  4. $(-9,-9)$

Solution

On the $x$-axis $y=0$, and the negative direction means $x<0$. So the point is $(-9,0)$.

Asked in: IMO

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