brianhai97
Which line has the equation y= -x=3?
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brianhai97
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j814wong
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Do you mean y=-x+3 or y=-x-3?
j814wong
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If it's y=-x+3, the answer is line DE
brianhai97
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that is what i mean y=-x+3
brianhai97
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also this one too plz, Which line has the equation x-3y=3?
j814wong
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For that, solve for y first.
x-3y=3
x-3=3y
(1/3)x-1=y
y=(1/3)x-1
Line GE
j814wong
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In a y=mx+b equation, m is teh slope and b is teh y-intercept so if asked to graph a line, try to converted teh equation into this form to make it easier.
brianhai97
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like how so?
brianhai97
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ohh my bad and thanks alot i get it :)
j814wong
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isolate the y variable to one side. For example
x-3y=3
x-3y+3y-3=3-3+3y
x-3=3y
(x-3)/3=3y/3
(1/3)x-1=y
y=(1/3)x-1
m = 1/3
b = -1
j814wong
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No problem
mukushla
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