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attashe74 [19]
3 years ago
11

What is the equation of the line that passes through the points (−2, 1) and (1, 10)?

Mathematics
1 answer:
Viktor [21]3 years ago
6 0

Answer:

3x - y = -7

Step-by-step explanation:

y = mx + b

m = deltay/deltax

m = (10 - 1)/[( 1 - (-2)]

m = 9/3 = 3

y = 3x + b

From (-2 | 1) we see that when x = -2, y = 1

Placing into the equation, in order to find b (y-intercept)

y = 3x + b

1 = 3(-2) + b

b = 7

y = 3x + 7 or 3x - y = -7

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