A line y=mx+1 is parallel to a line 3x+y+1=0 when m=a and perpendicular to the same line when m=b. Find the product of a and b.

A line y=mx+1 is parallel to a line 3x+y+1=0 when m=a and perpendicula

1.	A line y=mx+1 is parallel to a line 3x+y+1=0 when m=a and perpendicular to the same line when m=b. Find the product of a and b.
Answer» A line $y = m x + 1$ is parallel to a line $3 x + y + 1 = 0$ when $m = a$ and perpendicular to the same line when $m = b$ . Find the product of $a$ and $b$ .