NEED HELP NOW I WILL FAN AND METAL

What must be true about the slopes of two perpendicular lines, neither of which is vertical?
a. One of the slopes must equal 0.
b. The product of the slopes is –1.
c.The slopes are equal.
d.The product of the slopes is 1.

Question

NEED HELP NOW I WILL FAN AND METAL

What must be true about the slopes of two perpendicular lines, neither of which is vertical?
        a. One of the slopes must equal 0.
	b. The product of the slopes is  –1.
	c.The slopes are equal.
	d.The product of the slopes is 1.

misssunshinexxoxo · Answer

Since the two slopes would be negative reciprocals, their product would be -1