Mathematics
13 Online
OpenStudy (anonymous):
Check my answer..?
Write an equation of the line passing through the point (-4,2) and is parallel to y= -x+6
I got: y= -x+6; is it correct?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (p0sitr0n):
Parallel line slopes are equal
OpenStudy (anonymous):
yeah i know
hartnn (hartnn):
u got same equation as given ?
OpenStudy (anonymous):
whoa.. i just realized that.. umm here hold on..
OpenStudy (anonymous):
no you would put y = -x +7
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (p0sitr0n):
Maybe y=-x-2 ?
OpenStudy (anonymous):
i had to use this equation: y-y1=m(x-x1)
hartnn (hartnn):
start with y=-x+c
put the point (-4,2) there, and find c
hartnn (hartnn):
oh, so u have m, right ? which is ?
OpenStudy (anonymous):
m=-1
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i think..?
hartnn (hartnn):
yes, because lines are parallel
hartnn (hartnn):
and (x1,y1) = ?
OpenStudy (anonymous):
(-4,2)
OpenStudy (anonymous):
so it would be:
y-2=-1(x-(-4)) right?
Join the QuestionCove community and study together with friends!
Sign Up
hartnn (hartnn):
so now just put the values in y-y1=m(x-x1)
hartnn (hartnn):
yes, that is correct
hartnn (hartnn):
now simplify
OpenStudy (anonymous):
ohk so then i would distribute?
y-2=-1x+4 ?
hartnn (hartnn):
u missed the brackets...
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
no cuz i multiplied (x-(-4)) by -1
hartnn (hartnn):
so u get -1(x+4) = -x-4
hartnn (hartnn):
-(-4) = +4
OpenStudy (anonymous):
ohh ohk so the answer would be y=-x+-2 or y=-x-2 ?
OpenStudy (anonymous):
oh nvm
Join the QuestionCove community and study together with friends!
Sign Up
hartnn (hartnn):
yeah thats correct
hartnn (hartnn):
y=-x-2
OpenStudy (anonymous):
just keep the slope the same change the y intercepter
OpenStudy (anonymous):
ohk thank you(:
hartnn (hartnn):
welcome ^_^