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andrew11 [14]
2 years ago
10

Find the value of a if given points are collinear (5,1) (3,2) and (1,a)​

Mathematics
1 answer:
Ksenya-84 [330]2 years ago
8 0

9514 1404 393

Answer:

  a = 3

Step-by-step explanation:

The x-values 5, 3, 1 form an arithmetic sequence. The y-values will do the same: 1, 2, a = 1, 2, 3 -- a common difference of +1.

  a = 3

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