i) y = -2(1) + 4 = 2 {1,2} [memenuuhi]
ii) y = -5(1) + 7 = -5 + 7 = 2 {1,2} [ memenuhi ]
iii) y = 1/2(1) - 3/2 = 1/2 - 3/2 = -2/2 = -1 {1,-1} [tdk memenuhi]
iv) 3y - x = 7
3y = 7 + 1
y = 8/3 {1,8/3} [tdk memenuhi]
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i) y = -2(1) + 4 = 2 {1,2} [memenuuhi]
ii) y = -5(1) + 7 = -5 + 7 = 2 {1,2} [ memenuhi ]
iii) y = 1/2(1) - 3/2 = 1/2 - 3/2 = -2/2 = -1 {1,-1} [tdk memenuhi]
iv) 3y - x = 7
3y = 7 + 1
y = 8/3 {1,8/3} [tdk memenuhi]