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aalyn [17]
3 years ago
5

What is the equation of the line that passes through the point (6, -6) and has a slope of (-2, -2)

Mathematics
1 answer:
shutvik [7]3 years ago
4 0

Answer:

y = -1/2x -3

Step-by-step explanation:

The steps to solve this include finding the slope of the line and finding the point where the line crosses the y axis.

Slope is Rise over Run or difference of the y values over the difference of the x values.

Rise = difference between -6 and -2 = 4

Run = difference between 6 and -2 = 8

So slope is 4/8.  The line slants downward from left to right so the slope is also negative.  Slope = - 4/8 or simplified to - 1 / 2

To find the y intercept, use the slope-intercept form equation:

y = mx + b where m is your slope and b is the y intercept.  Solve for b and use one or both of your points that you were given along with your slope.

-6 = -1/2(6) + b      OR    -2 = -1/2(-2) + b

-6 = - 3 + b                      -2 = 1 + b

-3 = b                                -3 = b

Now you can use your calculated slope and calculated b to form your equation.

y = mx + b

y = - 1/2x -3

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Step-by-step explanation:

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About 5 out of 10 people entering a community college need to take a refresher mathematics course. If there are 970 entering​ st
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Answer:

"6 out of 10 people" means the ratio of class:no_class is 6:4

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I hope this helps

Step-by-step explanation:

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A plausible guess might be that the sequence is formed by a degree-4* polynomial,

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\begin{cases}a+b+c+d+e = -2 \\ 16 a + 8 b + 4 c + 2 d + e = 1 \\ 81 a + 27 b + 9 c + 3 d + e = 7 \\ 256 a + 64 b + 16 c + 4 d + e = 25 \\ 625 a + 125 b + 25 c + 5 d + e = 79\end{cases}

Solving the system yields coefficients

a=\dfrac58, b=-\dfrac{19}4, c=\dfrac{115}8, d = -\dfrac{65}4, e=4

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\Delta\{x_n\} = \{1-(-2), 7-1, 25-7, 79-25,\ldots\} = \{3,6,18,54,\ldots\}

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\Delta^4\{x_n\} = \{24-9,\ldots\} = \{15,\ldots\}

From here I made the assumption that \Delta^4\{x_n\} is the constant sequence {15, 15, 15, …}. This implies \Delta^3\{x_n\} forms an arithmetic/linear sequence, which implies \Delta^2\{x_n\} forms a quadratic sequence, and so on up \{x_n\} forming a quartic sequence. Then we can use the method of undetermined coefficients to find it.

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Step-by-step explanation:

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