3 years ago

What is the slope of the line that goes through (2,-2) and (-1, 1)?

Mathematics

1 answer:

Olegator [25]3 years ago

6 0

Answer:

m = -1

Step-by-step explanation:

use the slope formula so m = 1- -2 / -1 - 2

m = 1+2/-3, m=3/-3 so m = -1

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Answer:

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Step-by-step explanation:

we know that

If the three points are collinear

then

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we have

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The formula to calculate the slope between two points is equal to

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step 1

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we have

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substitute in the formula

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step 2

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we have

$A(1,\frac{2}{3}),C(-\frac{1}{2},4)$

substitute in the formula

$m_A_C=\frac{4-\frac{2}{3}}{-\frac{1}{2}-1}$

$m_A_C=\frac{\frac{10}{3}}{-\frac{3}{2}}$

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step 3

Equate the slopes

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solve for x

$15(x-1)20=22(9)$

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$300x=198+300$

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$x=\frac{498}{300}$

simplify

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