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Afina-wow [57]
3 years ago
13

If AD is the altitude to BC, what is the slope of AD? A. 1/3 B. 2/3 C. 3 D. −1/3

Mathematics
1 answer:
liberstina [14]3 years ago
6 0

9514 1404 393

Answer:

  C.  3

Step-by-step explanation:

AD is perpendicular to BC, so its slope will be the opposite of the reciprocal of the slope of BC.

The slope of BC can be found from the slope formula:

  m = (y2 -y1)/(x2 -x1)

  m = (-1 -2)/(3 -(-6)) = -3/9 = -1/3

Then the slope of AD is ...

  -1/(-1/3) = 3

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