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olga nikolaevna [1]
3 years ago
14

What equation defines a line through points (-2, 7) and (6, -9)

Mathematics
1 answer:
Tanya [424]3 years ago
4 0

7 =  - 2k + b \\  - 9 = 6k + b \\  \\ 7 =  - 2k + b \\  9 =  - 6k  -  b \\  \\16 =  - 8k \\ k =  - 2

Now we can find b

7 =  - 2 \times ( - 2) + b \\ 7 = 4 + b \\ b = 3

Answer:

y =  - 2x + 3

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