let the reflection is (h,k)
mid point of (h,k) and (4,13) lies on straight line
and slope of line and the line joining by point(h,k) and (4,13) are perpendicular
slope of the line =5
slope of line joining by point(h,k) and (4,13)=(k+13)/(h4)
so (k+13)/(h4) * (5) =1
5k +65 =h4
or h= 5k +69 ……1
and mid point lie on line
so 5(h+4)/2 + (k13)/2 +6 = 0
or 5(h+4) + (k13) +12 = 0
5h + k +19 =0…………..2
solve above two equation
point(1 ,14)

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