Find p for coincidental lines 12x+py =p , px + 3y -p+3=0
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Here a1=12 b1=p c1=p
a2=p b2=3 c2=p-3
Condition for coincidental lines
a1/a2=b1/b2=c1/c2
12/p=p/3=p/p-3
On comparing
12/p=p/3
p²=36
p=6,-6
a2=p b2=3 c2=p-3
Condition for coincidental lines
a1/a2=b1/b2=c1/c2
12/p=p/3=p/p-3
On comparing
12/p=p/3
p²=36
p=6,-6
Dhanumani:
It helped me very much.
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