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4 July, 14:30

Which of the following is true about the relationship between the slopes of the lines whose equations are 8x - 9y = 5 and 9x - 8y = 1?

They are equal.

They are reciprocals.

They are opposites.

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Answers (1)
  1. 4 July, 15:43
    0
    reciprocals

    Step-by-step explanation:

    Let's actually find the slopes. Then we can better compare them.

    8x - 9y = 5 → - 9y = 5 - 8x → slope is m = (-8) / (-9), or 8/9.

    9x - 8y = 1 → - 8y = 1 - 9x → slope is (-9) / (-8), or 9/8

    These two slopes are reciprocals (but not negative reciprocals).
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