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zvonat [6]
3 years ago
9

What is the equation of the line containing the points (3,1), (9,3) and (27,9)

Mathematics
2 answers:
Minchanka [31]3 years ago
7 0

Answer:

y=\frac{1}{3}x ~apex

Step-by-step explanation:

aleksley [76]3 years ago
5 0

Answer:

y = (1/3)x

Step-by-step explanation:

If this is truly a line, then we can find its equation using any two of the three given points.  If we go from (3, 1) to (27, 9), x increases by 24 and y increases by 8.  Thus, the slope of this line is m = rise / run = 8 / 24, or m = 1/3.

Using the point (3, 1) and the slope m = 1/3, the slope-intercept form y = mx + b becomes 1 = (1/3)(3) + b.  Thus, b = 0, and the line is y = (1/3)x.

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<em><u>The equation can be used to find the actual length of Gregory's room is:</u></em>

\frac{1\ cm}{4\ feet } = \frac{3\ cm }{x\ feet }

<em><u>Solution:</u></em>

Given that,

The scale that he uses is:

1 cm : 4 feet

On this drawing, the room is 3 cm long

Let "x" be the actual length of room

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1 cm : 4 feet

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This forms a proportion. Therefore,

\frac{1\ cm}{4\ feet } = \frac{3\ cm }{x\ feet }

Therefore, Option C is correct

Given that,

Rob chose A as the correct answer. Which is,

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3 years ago
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Answer:

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Solve the two-step equation and identify the steps.
AveGali [126]
1.

subtract 6.1 from both sides
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2.


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3 0
3 years ago
Read 2 more answers
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