If the line ax + 2y-3 = 0 is parallel to x + (A-1) y + 2 = 0, then the value of a is

A / 2 = 1 / (A-1), get the result a = 2 or - 1, that is, the slopes are equal

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1. If the line ax + 2y-1 = 0 is parallel to the line X-Y + 2 = 0, then the real number a =
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8. If the lines L1: ax + (1-A) y = 3, L2: (A-1) x + (2a + 3) y = 2 are perpendicular to each other, then the value of a is () A. 0 or - 32B. 1 or - 3C. - 3D. 1
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12. If the line ax + 2y-3 = 0 is perpendicular to the line x + y + 1 = 0, then a is equal to
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