In ∆ABC, equation to AB is 2x+3y-5=0, altitude through A is x-y+4=0 and altitude through B is 2x-y-1=0. Then the vertex C is
−15,95
15,95
15,-95
-15,-95
Orthocentre =(5,9). Altitude through C which is perpendicular to AB¯ is 3x-2y+3=0