px+qy=p-q,qx-py=p+q

Solve the following pair of linear equations : px+qy=p-qandqx-py=p+q

The base BC of a hat ABC is bisected at the point (p,q)& the equation to the side AB&AC are px+qy=1&qx+py=1. The equation of the median through A is: (p-2q)x+(q-2p)y+1=0(p+q)(x+y)-2=0(2pq-1)(px+qy-1)=(p^(2)+q^(2)-1)(qx+py-1) none of these

Solve the following pairs of linear equations px+qy=p-q" and " qx-py=p+q

The lines px +qy+r=0, qx + ry + p =0,rx + py+q=0, are concurrant then

Three lines px+qy+r=0 , qx+ry+p=0 and rx+py+q=0 are concurrent , if

Three lines px + qy+r=0, qx + ry+ p = 0 and rx + py + q = 0 are concurrent of

The lines px +qy+r=0, qx + ry + p =0,rx + py+q=0, are concurrant then

The lines px +qy+r=0, qx + ry + p =0,rx + py+q=0, are concurrant then

The lines px+qy+r=0,qx+ry+p=0,rx+py+q=0 are concurrant then

If lines px+qy+r=0,qx+ry+p=0 and rx+py+q=0 are concurrent,then prove that p+q+r=0 (where p,q,r are distinct )