The image of the point (3,5)
Question:
The image of the point $(3,5)$ in the line $x-y+1=0$, lies on :
Correct Option: , 4
Solution:
$\frac{x-3}{1}=\frac{y-5}{-1}=-2\left(\frac{3-5+1}{1+1}\right)$
$\mathrm{So}, x=4, y=4$
Hence, $(x-2)^{2}+(y-4)^{2}=4$