The orthocenter of the triangle formed by the lines b+2h+a=0. and x+y=1 is

The lines by which triangle is formed are x=0, y=0, and x+y=1.clearly, it is a right triangle. We know that in a right-angled triangle, the orthocenter coincides with the vertex at which right angle is formed. Therefore, the orthocenter is (0,0)