3 years ago

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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