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Neporo4naja [7]
3 years ago
11

Which pair of ratios form a proportion? A. 2 : 3 and 3 : 4 B. 8 : 12 and 16 : 20 C. 4 : 7 and 12 : 21 D. 9 : 15 and 10 : 16

Mathematics
1 answer:
djyliett [7]3 years ago
6 0
C.
You can simplify 12:21 to 4:7 by dividing 12 by 3 to get 4 and by dividing 21 by 3 to get 7.  Because dividing both those numbers in the one ratio by 3 gives you the other ratio, they are a proportion.
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What is the equation of a line, in point slope form that passes through (-2, -6) and has a slope of 1/3 ​
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<u>Answer:</u>

The equation of a line, in point slope form that passes through (-2, -6) and has a slope of 1/3 ​is y+6=\frac{1}{3}(x+2)

<u>Solution:</u>

Given that line passes through (-2, -6) and has slope of 1/3

We have to find the equation of the line

The point slope form is given as

y-b=m(x-a)

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Here in this question, m = 1/3 and a = -2 and b = -6

By substituting in point slope form we get,

y - (-6) = \frac{1}{3}(x - (-2))\\\\y + 6 = \frac{1}{3}(x + 2)

Hence the equation of a line, in point slope form that passes through (-2, -6) and has a slope of 1/3 ​is y+6=\frac{1}{3}(x+2)

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Step-by-step explanation:

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Read 2 more answers
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