Question: Given two lines L 1 and L 2 with slopes m 1 = 9 a 3 8 and m 2 = 9 a 6 5

Given two lines L 1 and L 2 with slopes m 1 = 9 a 3 8 and m 2 = 9 a 6 5 , respectively, what value(s) of a will make:

L11 parallel to L22: a=

L11 perpendicular to L22: a=

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