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irinina [24]
3 years ago
8

which choice could be the equation of a line perpendicular to the line represented by this equation? y=2/5x=2 answers choice A(

y=2/5x-3 B(5/2x=7 C(y=-5/2x+-3 D(y=-2x+5
Mathematics
1 answer:
ratelena [41]3 years ago
8 0
The slope in y = mx + b form will be in the m position (the number before the x)
y = 2/5x ? 2..here the slope is 2/5.....a perpendicular line will have a negative reciprocal slope. All that means is " flip " the slope and change the sign.
2/5.....flip it....5/2...change the sign...-5/2...so we need a slope of -5/2.

answer C......y = -5/2x + (-3)
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General Formulas and Concepts:

<u>Pre-Alg</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

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<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{4000-3000}{60-40}
  2. Subtract:                       m=\frac{1000}{20}
  3. Divide:                          m=50
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