helena-cook_60a3fc3bb8daa
helena-cook_60a3fc3bb8daa
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{y = x + 1 {y = - 2x + 1 y = x + 1 y = - 2x + 1 (x + 1) = - 2x + 1 x + 1 = - 2x + 1 x + 2x = 1 - 1 3x = 0 x = 0/3 x = 0 y = x + 1 y = 0 + 1 y = 1 S = {0, 1}