Question 1106795
Here is a start.

The line is {{{y=3x/2-10}}} which is a general point  ( {{{x}}}, {{{3x/2-10}}} ).


Using Distance Formula and squaring both sides, Line to A equals Line to B;

{{{(x-1)^2+(3x/2-10-1)^2=(x-1)^2+(3x/2-10-8)^2}}}

Simplify and solve for x;

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{{{-33x+121=-54x+324}}}

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