Find the slope of the line that is parallel and perpendicular to each of the following equation. EQUATION: 2x – 2y = -6 WORK: PARALLEL SLOPE: PERPENDICULAR SLOPE:
Set it equal to y
Ok so I have a table full of these problems, and just need smeone to show me how to do one and I got the rest !
ok -2y=-2x-6
-y=-x-3
y=x+3
@texaschic101 you're a great teacher, why don't you take this one
you got it ....thanks
Uhm, @aprilsages looks like you got it..
so the slope would be 0, but how do I find the slope of the line that is parallel and perpendicular to the equation?
put the equation in y = mx + b form... 2x - 2y = - 6 -2y = - 6 - 2x y = (-2x - 6)/-2 y = x + 3 For a parallel line, the slope is the same....so the slope for this is 1. Do you understand ?
if there is no number in front of x, it is 1.....always. The same with y, if there is no number in front of it, it is 1.
ok got it
so the slope for parallel line is the same as the slope in the original equation, which is 1
but how do I find the line that's perpendicular
perpendicular slopes are the negative reciprocals
now, the perpendicular line. The slope for the perpendicular line is the negative reciprocal.
what does that mean, negative opposites?
what is the negative reciprocal of 1 ?
-1
example.....2.....negative reciprocal is - 1/2
\[x=-\frac{ 1 }{ x }\] This is a negative reciprocal
o
so it would be 1=-1/1
the negative reciprocal would be -1
-1/1.......rise -1, run + 1.....@Luigi0210 ...would it just be -1 or -1/1
what?
@Luigi0210 ........
it's -1
thats what I thought....just making sure.....thank you Luigi...your a good person
Haha, thank you, you are too :P
wait so am i using the formula x=-1/x to find all the perpendicular slopes?
you are using the negative reciprocal........for instance -3.....parallel would be -3, perpendicular would be 1/3.
-3 is the same as -3/1....so flip it and make it positive
so if it were 3 i'd flip it 1/3 and make it negative, -1/3?
so for all of them I just flip it and make it positive?
3/1...negative reciprocal is - 1/3.. No....only make it positive if it is negative.....if it is positive, make it negative....make it the opposite
ok so flip it and make it opposite?
let me show you... this is just for perpendicular... slope 4.......negative reciprocal is - 1/4 slope -5.....negative reciprocal is 1/5 flip it and change the sign
yes....flip it and make it opposite
got it thanks so much!!!!!!!!!!!!!!!!!!!!!!!!!!!
slope intercept form is y=mx+b right?
your welcome...remember parallel is the same and perpendicular, you flip it and make it opposite. You first have to put it in y = mx + b form. Got it ?
yes got it :)
ty you r awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
if you have any more troubles with it, just flag me or Luigi, he is good. We will be happy to help :)
Ok thank you so much will do!!!!!!!!!!!!!!
well I'm not good.. only she is :P
yes you are.....
you both rock @Luigi0210 @texaschic101
ty so much!!!!!!!!!!!!!!!!!!!!!!!!
|dw:1370973449603:dw|
Join our real-time social learning platform and learn together with your friends!