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# Which of the following lines is perpendicular to 4x + 5y = 9 on the xy

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Which of the following lines is perpendicular to 4x + 5y = 9 on the xy  [#permalink]

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22 Jul 2019, 01:17
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Which of the following lines is perpendicular to 4x + 5y = 9 on the xy-plane?

A. $$y=\frac{5}{4}x + 2$$

B. $$y=-\frac{5}{4}x+9$$

C. $$y=-4x+\frac{9}{5}$$

D. $$y=\frac{4}{5}x-\frac{4}{5}$$

E. $$y=-\frac{4}{5}x$$

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Which of the following lines is perpendicular to 4x + 5y = 9 on the xy   [#permalink] 22 Jul 2019, 01:17
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