Question 1203788
That line is a general point,  (x, -2x+4).

Try using the distance-formula...


Writing the text for the algebra steps is exceedingly difficult to do through the keyboard.  One of the steps may become the equivalent of ...

{{{-16x-28x+56x-10x=25+196-64-49}}}


.

{{{x=54}}}
{{{and}}}
{{{y=-104}}}