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Kenley Stone
Mathematics
25 July, 14:50
2y+4x=8 when x=-2,1,3
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Aliya Guerra
25 July, 15:20
0
4x + 2y = 8
When x = - 2: 4x + 2y = 8
4 (-2) + 2y = 8
-8 + 2y = 8
+ 8 + 8
2y = 16
2 2
y = 8
(x, y) = (-2, 8)
When x = 1: 4x + 2y = 8
4 (1) + 2y = 8
4 + 2y = 8
- 4 - 4
2y = 4
2 2
y = 2
(x, y) = (1, 2)
When x = 3: 4x + 2y = 8
4 (3) + 2y = 8
12 + 2y = 8
- 12 - 12
2y = - 4
2 2
y = - 2
(x, y) = (3, - 2)
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