persamaan garis
no. 14
2x + 3y - 6 = 0
memotong sb y, artinya x = 0
2.0 + 3y - 6 = 0
3y = 6
y = 2
titik potong dg sb y = (0,2)
no. 15
3x + y = 5
2x - 3y = 7
9x + 3y = 15
jumlahkan
11x = 22
x = 2
3.2 + y = 5
y = -1
titik potong = (2,-1)
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persamaan garis
no. 14
2x + 3y - 6 = 0
memotong sb y, artinya x = 0
2.0 + 3y - 6 = 0
3y = 6
y = 2
titik potong dg sb y = (0,2)
no. 15
3x + y = 5
2x - 3y = 7
9x + 3y = 15
2x - 3y = 7
jumlahkan
11x = 22
x = 2
3x + y = 5
3.2 + y = 5
y = -1
titik potong = (2,-1)