The two lines `x=ay+b, z=cy+d` and `x= a' y+ b', z= c' y +d'` will be perpendicularm if and only if

The two lines x = ay+ b , z = cy + d and x = a' y + b', z = c ' y + d' will be perpendicular, if and only if

The two lines : x+ay+b, z=cy+d, and x=a'y+b' , z=c'y+d' will be perpendicular if and only if:

The two lines x=ay+b, z=cy+d and x=a'y+b', z=c'y+d will be perpendicular ,if and only if

the two lines x=ay+b,z=cy+d and x=a\'y+b,z=c\'y+d\' will be perpendicular, if and only if: (A) aa\'+cc\'=1=0 (B) aa\'+bb\'+cc\'=1=0 (C) aa\'+bb\'+cc\'=0 (D) (a+a\')+(b+b\')+(c+c\')=0

the two lines x=ay+b,z=cy+d and x=a\'y+b,z=c\'y+d\' will be perpendicular, if and only if: (A) aa\'+c c' + 1=0 (B) aa\'+b b\'+c c'+1=0 (C) aa\'+b b\'+c c'=0 (D) (a+a\')+(b+b\')+(c+c\')=0

If the lines x=ay +b, z=cy+d and x=a'y + b', z=c'y + d' are perpendicular, then

The two lines x=ay+b, z=cy+d and x=a'y+b', z=c'y+d' are perpendicular to each other if :

The two lines x=ay+b, z=cy+d and x=a'y+b', z=c'y+d' are perpendicular to each other, if