9.The equations of the sides AB, BC and CA ofA ABC are y -- x=2, x + 2

1.	9.The equations of the sides AB, BC and CA ofA ABC are y -- x=2, x + 2y = 1 and 3x +y +5=0respectively. The equation of the altitude throughBisys
Answer» sorry i didn't understand the question sorry.please like The altitude passes through point B. We can get coordinates of point B by solving eqn of line AB and BC. y - x = 2x + 2y = 1Therefore B is (-1,1) Also, the altitude through B is perpendicular to side AC. => Slope of altitude = -1/Slope of AC= -1/(-3)= 1/3 So, we now have a pt. (-1,1) and slope of the line 1/3.Hence required eqn of the line (y - 1) = 1/3 (x +1)which is 3y - x = 4 (Ans)

9.The equations of the sides AB, BC and CA ofA ABC are y -- x=2, x + 2y = 1 and 3x +y +5=0respectively. The equation of the altitude throughBisys

Answer»

sorry i didn't understand the question sorry.please like

The altitude passes through point B.

We can get coordinates of point B by solving eqn of line AB and BC. y - x = 2x + 2y = 1Therefore B is (-1,1)

Also, the altitude through B is perpendicular to side AC. => Slope of altitude = -1/Slope of AC= -1/(-3)= 1/3

So, we now have a pt. (-1,1) and slope of the line 1/3.Hence required eqn of the line (y - 1) = 1/3 (x +1)which is 3y - x = 4 (Ans)