perpendicular ling equation is y=-4x-5;(0, -1)

Question

anonymous · Answer

A perpendicular line's slope is the negative reciprocal, so if the slope is 1/5, the perpendicular's slope is -5. 
Here our slope is -4, what do you think the perpendicular's slope is?

anonymous · Answer

Okay I am a little lost

anonymous · Answer

Ok. Sometimes math terms can be confusing. Sorry. :)
Basically, if we want to find the slope of a perpendicular line, we have to take the slope of the first line.
So say the slope of the line was 7. This could also be written as $$7\over1$$
To find a the slope of a perpendicular line, we need to flip the fraction, (get the recriprocal) and change the sign in front of it. So, our slope was 7/1, now it is
$$-{1\over7}$$

Here's the two slopes. (attached pic) You can see that they are perpendicular, becasue they make a perfect X where they cross.

Is this making sense?