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Katarina [22]
3 years ago
13

A line passes through (2, -1) with slope 3.

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0
A. y - 1 = 3x + 6
Add 1
y = 3x + 7

B. 3y + 6 = x - 1
Subtract 6, then divide by 3
3y = x - 7
y = 1/3x - 7/3

C. y - 2 = 1/3x + 1
Add 2
y = 1/3x + 3

D. y + 1 = 3x - 6
Subtract 1
y = 3x - 7

When put on a graph, D passes through (2, -1)

Answer is D.
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Answer:

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Step-by-step explanation:

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<em>Alternate solutions</em>

Given the three sides, you can find the smallest angle from the Law of Cosines. It will be ...

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Then the area is ...

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Using Heron's formula:

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If you need to, you can compute the triangle's height from the Pythagorean theorem.

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