Answer :

Let the point 7 units away from A be B, then d (A, B) = 7 where the coordinate of A is 1.

So, we have either of the following two cases:


Case I- If A > B, then


d(A, B) = A – B


7 = 1 – B B = 1 – 7 = -6


Case II- If A < B, then


d(A, B) = B – A


7 = B – 1 B = 7 + 1 = 8


Hence, the coordinates of the required points are -6 and 8.


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