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Step2247 [10]
3 years ago
14

Analyze the effect that plentiful harvests had on population in the ancient civilizations of the mainland's river valleys

Geography
1 answer:
PilotLPTM [1.2K]3 years ago
4 0
One effect that plentiful harvests had on ancient civilizations of the mainland's river valleys was to help have larger populations and the need to have materials to survive.  
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Write the equation of the line that goes through the point (−9, −4) and is parallel to the line −x + 3y = −0.5
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Answer:

y = \frac{1}{3}x -1

Explanation:

Given

Parallel to: -x + 3y = -0.5

Passes through (-9,-4)

Required

Determine the line equation

First, we calculate the slope (m) of the said line

-x + 3y = -0.5

Make y the subject

3y = x - 0.5

Divide through by 3

y = \frac{1}{3}x - \frac{0.5}{3}

An equation has the general form:

y = mx + b

Where

m = slope

So:

m = \frac{1}{3}

Because the required line is parallel to -x + 3y = -0.5, then they have the same slope of m = \frac{1}{3}

Next, is to calculate the line equation using:

y = m(x - x_1) + y_1

Where

m = \frac{1}{3}

(x_1,y_1) = (-9,-4)

This gives:

y = \frac{1}{3}(x -(-9)) + (-4)

y = \frac{1}{3}(x +9) -4

Open bracket

y = \frac{1}{3}x +3 -4

y = \frac{1}{3}x -1

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