What's the pair of simplified equations that correspond to perpendicular lines?
1- y=-1/6x-3, y=-1/6+3
2- y=6x+3, y=-1/6x+1/3
3- y=-6x+1/3, y=6x+1/3
4- y=-6x+3, y=-6x-1/3

Question

anonymous · Answer

perpendicular lines have slopes that are opposite reciprocals of each other.  Do you know where the slope is in an equation of the form y = mx + b as you have in your answer choices?

liliakarina · Answer

That's the problem - I don't really know.

anonymous · Answer

in an equation of the form y = mx + b,  m is the slope

anonymous · Answer

so, if our equation was y = 2x + 3, then here the 2 is the slope

anonymous · Answer

in y = 7x - 5, the 7 is the slope

liliakarina · Answer

I see now

liliakarina · Answer

Just the fractions confuse me

anonymous · Answer

now, if I want a line that is perpendicular to y = 7x-5, then I need a line that has a slope that is the opposite reciprocal of 7.  A reciprocal means you take a fraction or a number and flip it upside down.

anonymous · Answer

so, the opposite reciprocal of 7 would be -1/7

anonymous · Answer

if -5 is your slope, then the opposite reciprocal of -5 is positive 1/5

anonymous · Answer

again, perpendicular lines have slopes that are opposite reciprocals of each other

anonymous · Answer

if you end up with a question where you are looking for a parallel line, look for a line that has the SAME slope.  I'm sure you will need that info during this unit.

liliakarina · Answer

Indeed. So, the answer would be 1?

liliakarina · Answer

@Nisha318

anonymous · Answer

look at your answer choices

anonymous · Answer

which of those pair of equations have slopes that are opposite reciprocals of each other

liliakarina · Answer

All right. Thank you

anonymous · Answer

2 would be your answer

liliakarina · Answer

Thank you