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Nostrana [21]
2 years ago
13

Which equation represents a line that passes though (5, 1) and has a slope of 1/2?

Mathematics
1 answer:
Archy [21]2 years ago
4 0

Answer:

\large\boxed{y-1=\dfrac{1}{2}(x-5)\leftarrow\text{point-slope form}}\\\boxed{y=\dfrac{1}{2}x-\dfrac{3}{2}\leftarrow\text{slope-intercept form}}\\\boxed{x-2y=3\leftarrow\text{standard form}}

Step-by-step explanation:

The point-slope of an equation of a line:

y-y_1=m(x-x_1)

We have

the point (5,\ 1)\to x_1=5,\ y_1=1

and the slope m=\dfrac{1}{2}

Substitute:

y-1=\dfrac{1}{2}(x-5)          <em>use distributive property</em>

y-1=\dfrac{1}{2}x-\dfrac{5}{2}       <em>add 1 to both sides</em>

y=\dfrac{1}{2}x-\dfrac{3}{2}        <em>multiply both sides by 2</em>

2y=x-3               <em>subtract x from both sides</em>

-x+2y=-3            <em>change the signs</em>

x-2y=3

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Answer:

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(c) P(Y'|M')\approx 0.1323

Step-by-step explanation:

Given table is

                Yes      No      Don't Know      Total

Men          162      92             25               279

Women      258    41              11               310

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(a)

P(Y'|M)=\frac{P(Y'\cap M)}{P(M)}

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P(Y'|M)=\frac{92}{279}

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(b)

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P(Y|M')\approx 0.8323

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P(Y'|M')=\frac{P(Y'\cap M')}{P(M')}

P(Y'|M')=\frac{\frac{41}{589}}{\frac{310}{589}}

P(Y'|M')=\frac{41}{310}

P(Y'|M')=0.132258064516

P(Y'|M')\approx 0.1323

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