Question

9. The slope of the line 3x - py+1 = 0 is -2, then p = .......
(d) 1,b(2/3),c(-3/2), a(-1/2)​

Answer 1

Slope of the line ax+by+c=0 is -a/b
then slope of the line 3x-py+1=0 is -3/-p
Therefore,-3/-p=-2
implies p=-3/2