Which pair of equations represents perpendicular lines? A.) y=2x+7 and y=x+7 B.) Y=2x+7 and y=-2x-2 C.)y=2x+7 and Y=2x-7 D.) y=2x-7 and y=-1/2-7

Question

Which pair of equations represents perpendicular lines? A.) y=2x+7 and y=x+7   B.) Y=2x+7 and y=-2x-2   C.)y=2x+7 and Y=2x-7   D.) y=2x-7 and y=-1/2-7

radar · Answer

Is D. correctly typed ?   I don't see a x term.

anonymous · Answer

Yes

radar · Answer

Well as typed, there are no correct answers.  D.  would be correct if the last equation was:
y=-1/2x - 7.

radar · Answer

Perpendicular lines the product of their slopes is -1.

radar · Answer

You copy that RandiHobbs

anonymous · Answer

Yes, thankyou.

radar · Answer

The A solution product is 2
The B   is  -4
The C  is 4 
the  D does not have the x term but the product if there was an x would be -1.

radar · Answer

Your text may have a typo, did you copy these?

radar · Answer

If I were forced to choose, I would choose D.