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1 year ago

Find the slope of the line that passes through (2,21) and (84, -30)

Mathematics

1 answer:

Flura [38]1 year ago

3 0

Answer:

-51/82.

Explanation:

Given two points (x1,y1)=(2,21) and (x2,y2)=(84,-30), we find the slope using the formula below:

$m=\frac{y_2-y_1}{x_2-x_1}$

Substitute the given points:

$\begin{gathered} m=\frac{-30-21}{84-2} \\ m=-\frac{51}{82} \end{gathered}$

The slope of the line that passes through the given points is -51/82.

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A sample size of n is required.

n is found when M = 0.035. So

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$0.035\sqrt{n} = 2.327\sqrt{0.37*0.63}$

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$n = 1030.4$

Rounding up:

A sample size of 1031 is required.

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