alwaysasking
find y for the linear equations
2x-3y=6
and find y for
-10x=5y
Delete
Share
This Question is Closed
wannabegurl
Best Response
You've already chosen the best response.
0
duno
JayDS
Best Response
You've already chosen the best response.
0
rearrange for y.
1) 2x-3y=6
2x -6 = 3y
2/3x-6/3 = y
y=2/3x -2
2) -10x = 5y
try this one yourself.
alwaysasking
Best Response
You've already chosen the best response.
0
ok wannabeagirl then go away
wannabegurl
Best Response
You've already chosen the best response.
0
\[gj\]
wannabegurl
Best Response
You've already chosen the best response.
0
retriceole
alwaysasking
Best Response
You've already chosen the best response.
0
@jayds i got for 1 x-1.3
alwaysasking
Best Response
You've already chosen the best response.
0
i really don t under stand
JayDS
Best Response
You've already chosen the best response.
0
find y means that you have to isolate y, do you see how I did it above?
we want y = ...............
Lets use an example say 5x + y = 9
I want to find "x" this time not y, so I just bring the y to the right hand side and bring the 9 to the left hand side.
5x - 9 = -y
y = -5x + 9
do you understand?
alwaysasking
Best Response
You've already chosen the best response.
0
so if i put -1 in the place of x what will it be
JayDS
Best Response
You've already chosen the best response.
0
sorry, I do not understand what you are trying to say.
alwaysasking
Best Response
You've already chosen the best response.
0
so instead of y=2/3x -2 what will it equal if \[ y=2/3\times-1 -2\]
alwaysasking
Best Response
You've already chosen the best response.
0
you know what im saying
JayDS
Best Response
You've already chosen the best response.
0
ok, substitution of x=-1 inside the equation is what u mean.
then you just solve it.
y=2/3 x -1 -2
y= -2/3 -2
y=-3.667
alwaysasking
Best Response
You've already chosen the best response.
0
okkkkkkkkkkkk now i understand thanks so much!
JayDS
Best Response
You've already chosen the best response.
0
it's ok, medal thanks :P