Tresag
solve the system of linear equations by graphing. [3x+y=0
[2x+y=2



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sonja_lee2
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get y by its self do u know how to do that?

Tresag
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no

sonja_lee2
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okay well you divide 3x by 0 and what do u get?

Tresag
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0

sonja_lee2
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no for equations like this u just keep it in the equation so what you suppose to get is y=3x+0 and now you have something to graph

sonja_lee2
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no try and do it on the next one

sonja_lee2
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i meant now try*

Tresag
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so is it 3x ?

sonja_lee2
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no where did u get the negative from?

sonja_lee2
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i gave u the answer now all u have to do it graph it

sonja_lee2
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but u still have to get the 2x+y=2 try to do it

Tresag
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I don't know how to graph that

sonja_lee2
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the answer is [y=3x+0
[y=2x+2 you dont know how to graph that?

Tresag
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no

sonja_lee2
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do u know what the yintercept is?

sonja_lee2
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and the slope?

Tresag
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no

sonja_lee2
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do you know this equation y=mx+b?

sonja_lee2
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m is the slope and b is the yintercept?

Tresag
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I don't understand :(

sonja_lee2
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is this your homework?

Tresag
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yes

helder_edwin
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u have
\[ \large 3x+y=0\qquad\text{and}\qquad 2x+y=2 \]

Tresag
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ok

helder_edwin
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isolating y u have
\[ \large y=3x\qquad\text{and}\qquad y=2x+2 \]
ok?

Tresag
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ok

helder_edwin
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the easiest way to graph lines is doing a table. u need only two points.

Tresag
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ok

helder_edwin
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dw:1348879936181:dw

helder_edwin
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dw:1348879976897:dw

Tresag
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ok so what is the ordered pair ?

helder_edwin
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for the first line u have the points (0,0) and (1,3)
for the second (0,2) and (1,0).

Tresag
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ok, so what is the solution of the system of equations ????

helder_edwin
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draw the lines. do it with the outmost precision u can.

helder_edwin
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i can't do it here.
this is something u have to do on your own.

Tresag
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ok, thanks

helder_edwin
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u r welcome