Question 1031166
{{{sqrt(5)=sqrt((a-0)^2+(0-b)^2)}}}

{{{5=a^2+b^2}}} ──Equation A


{{{y=mx+b}}}

{{{y=(-b/a)x+b}}} ──Equation B

{{{y=(-b)((x/a)+1)}}}

{{{b=ay/(a-x)}}} ──Equation C


Use:
{{{5=a^2+(ay/(a-x))^2}}}

Then substitute: (2,2)

We get {{{a=1}}} then substitute a to Equation C to find {{{b=-2}}}

Use {{{y=mx+b}}} to find the answer by substituting {{{a=1}}} and {{{b=-2}}} to Equation B.



The answer is {{{2x-y-2=0}}}