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3x-1=x+5
2x=6
x=3
titik potong y
y=3x-1
y=3(3)-1
y=8
x,y=3,8
y = x + 5
3x - 1 = y
3x = y + 1
x = (y + 1)/3
x + 5 = y
x = y - 5
untuk mencari titik potong, maka gunakan :
y = y dan x = x
untuk y = y
3x - 1 = x + 5
3x - x = 5 + 1
2x = 6
x = 6/2
x = 3
untuk x = x
(y + 1)/3 = y - 5
y + 1 = 3(y - 5)
y + 1 = 3y - 15
3y - 15 = y + 1
3y - y = 1 + 15
2y = 16
y = 16/2
y = 8
titik potong = (3, 8)