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What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Which expression is equivalent to -5(3x - 6/7)

Aline has a slope of . which ordered pairs could be points on a parallel line? check all that apply. (-8, 8) and (2, 2) (-5, -1) and (0, 2) (-3, 6) and (6, -9) (-2, 1) and (3,-2) (0, 2) and (5,5)