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*penyelesaian
D1= penyelesaian = x + 2y = 6
= nilai x,y = { bilangan cacah } => {0,1,2,3,4,5,...}
D2 = grafik dari pnelesaian ?
D3 =
=> x = 0 => x + 2y = 6
0 + 2y = 6
2y = 6 - 0
y =
y = 3
=> x = 2 => x + 2y = 6
2 + 2y =6
2y = 6-2
y =
y = 2
=> x = 4 => x + 2y = 6
4 + 2y = 6
2y = 6-4
y =
y = 1
jadi nilai x = { 0,2,4 } , niali y = { 3,2,1 }.
jadi itu jawabannya B.