Răspuns:
Explicație pas cu pas:
3x-5y = -9 =>
3x = 5y-9 => x = (5y-9)/3
y = 0 => x = (0-9)/3 => x = -3 (-3 ; 0)
y = 3 => x = (15-9)/3 = 6/3 => x = 2 (2 ; 3)
y = 6 => x = (30-9)/3 = 21/3 => x = 7 (7 ; 6)
y = 9 => x = (45-9)/3 = 36/3 => x = 12 (12 ; 9)
y = 1 => x = (5-9)/3 = > x = -4/3 (-4/3 ; 1)
y = 2 => x = (10-9)/3 => x = 1/3 (1/3 ; 2)
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etc...
