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algol13
3 years ago
13

1) The scatter plot below shows the distance Destiny traveled on her cycling trip for various lengths of time during the trip. W

hat equation could describe the line of best fit for the scatter plot?
2) Estimate an equation for the line of best fit for the following scatter plot for the post high school education and salary


please show your work

Mathematics
1 answer:
prisoha [69]3 years ago
4 0
To determine the equation of the best fit line, the graphical approach can be done. A line is used in between the given points. Then, the slope and the y-intercept of the line is determined to give us the equation. The equations of two scatter plots are
y = 0.22 x + 0.46
y = 8x + 8.25<span />
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Answer:

  more than half are being used

Step-by-step explanation:

Perhaps easiest to understand is the most straightforward: figure the total number of seats and the number of seats being used. Check to see if that is more than half.

The 1 first-class carriage has usage of ...

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The 6 standard carriages have usage of ...

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The total number of seats on the train is ...

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The 276 used seats are more than half of the total number. More than half the seats are being used.

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<em>Alternate solution</em>

Another way to look at this is to compare utilization to 1/2 in each carriage class.

  In first class 1/2 -3/8 = 1/8 of 64 seats = 8 seats fewer than 1/2 the seats are being used.

  In standard class, 7/13 -1/2 = 14/26 -13/26 = 1/26 of 78 seats = 3 seats more than 1/2 the seats are being used. There are 6 standard class carriages, so 6·3 = 18 more than half the seats in the standard-class carriages are being used.

This number is 10 more than the 8 under-utilized seats in first class, so <em>more than half the train seats are being used</em>.

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