When right ing mad you need to esprss it
The correct answer is A. (1, 2)
If two lines are perpendicular, the statement that must be true is : D. The product of their slopes is -1
Lets say that a line has a slope of 2, the line which perpendicular to that line would have a slope of -1/2
Which means, the product would be 2(-1/2) = -1
hope this helps
6:5. or 6/5 which ever way you choose
