Question

Question No. 79
If ax + y + 1 = 0 and x + by + 1 = 0 are perpendicular lines then a + b =
ax + y + 1 = 0 and x + by + 1 = 0 ev vowegs a + b =
o 2
o-1
ОО
O 1​

Answer 1

Answer:

O1 is the best answer of the question