In the xy plane above if the graph above line l is reflected

In the xy -plane above, if the graph above line l is reflected across line l, through which of the following points does the reflected graph pass? A B C D E

Solution

Since the reflection is taking place along line Y=X therefore in case of reflection along line Y=X the coordinate interchanges that is y become x and x become y hence considering above situation the graph after reflection will pass through point C.