Whakaoti mō x
x=-2y-4
Whakaoti mō y
y=-\frac{x}{2}-2
Graph
Tohaina
Kua tāruatia ki te papatopenga
y+1=-\frac{1}{2}x-1
Whakamahia te āhuatanga tohatoha hei whakarea te -\frac{1}{2} ki te x+2.
-\frac{1}{2}x-1=y+1
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-\frac{1}{2}x=y+1+1
Me tāpiri te 1 ki ngā taha e rua.
-\frac{1}{2}x=y+2
Tāpirihia te 1 ki te 1, ka 2.
\frac{-\frac{1}{2}x}{-\frac{1}{2}}=\frac{y+2}{-\frac{1}{2}}
Me whakarea ngā taha e rua ki te -2.
x=\frac{y+2}{-\frac{1}{2}}
Mā te whakawehe ki te -\frac{1}{2} ka wetekia te whakareanga ki te -\frac{1}{2}.
x=-2y-4
Whakawehe y+2 ki te -\frac{1}{2} mā te whakarea y+2 ki te tau huripoki o -\frac{1}{2}.
y+1=-\frac{1}{2}x-1
Whakamahia te āhuatanga tohatoha hei whakarea te -\frac{1}{2} ki te x+2.
y=-\frac{1}{2}x-1-1
Tangohia te 1 mai i ngā taha e rua.
y=-\frac{1}{2}x-2
Tangohia te 1 i te -1, ka -2.
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