SOLUTION: Find all points on the​ x-axis that are 6 units from the point (2,-3).

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Question 1164770: Find all points on the​ x-axis that are 6 units from the point (2,-3).
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
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In a coordinate plane, the points on ​the  x-axis  are the points (x,0) for arbitrary "x".


So, the points you are looking for, satisfy this distance equation


    sqrt%28%28x-2%29%5E2+%2B+%280-%28-3%29%29%5E2%29 = 6,

or

    sqrt%28%28x-2%29%5E2+%2B+9%29 = 36.


Square both sides to get


    (x-2)^2 + 9 = 6^2

    (x-2)^2 = 36 - 9

    (x-2)^2 = 27

    x - 2 = sqrt%2827%29 = +/- 3%2Asqrt%283%29


Hence, there are two values for x  x%5B1%5D = 2%2B3%2Asqrt%283%29  and  x%5B2%5D = 2-3%2Asqrt%283%29.


So, the points are  A = (2%2B3%2Asqrt%283%29,0)  and  B = (2-3%2Asqrt%283%29,0).     ANSWER

Solved.