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Kruka [31]
3 years ago
15

The equation y = 5x represents the amount of miles Fran runs in x days. When a graph of this situation is drawn, what does the p

oint (1, 5) on the graph represent? (asap if possible)

Mathematics
2 answers:
Lisa [10]3 years ago
7 0

Answer:

The answer is "in one day, Fran runs 5 miles"

Step-by-step explanation:

In order to determine the answer, I have attached an image that shows the graph of the equation. We know that "x" represents days and "y" represents miles that Fran runs.

In any function, the pairs of coordinates are represented by (x,y) that belong to the function.

So in this case, the pair (1,5) represents:

x=1

y=5

It means, in one day Fran runs 5 miles.

GuDViN [60]3 years ago
4 0
so y=5x on a graph is going to look like a 5/1 slope. X represents days and Y represents miles. So (1,5) means in 1 day Fran runs 5 miles.
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Answer:

  1. f(x) = 34.59 +3.74x
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Step-by-step explanation:

1. The selection of answers offers a choice of positive or negative slope, a slope of about 4 or about 35, and y-intercepts from the same set of values.

If you consider a couple of points (at the ends of the domain is usually a good choice), you see the slope is about 4 and the y-intercept is around 30.

For example, the points (5, 50) and (15, 91) have a slope of (91-50)/(15-5) = 4.1 so will give rise to the equation ...

  y -50 = 4.1(x -5)

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So, the nearest of the offered choices is ...

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Please note that no calculator is involved. We simply estimated the parameters of the regression line based on a couple of the data points. This estimate is sufficient to allow us to find the correct answer choice.

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2. If we look at a few other data points, we see that they have a generally upward trend that matches the above equation pretty well. That suggests a very high value of correlation, so the appropriate choices would be 0.93 or 0.96. Of course, the correlation is positive, matching the sign of the slope of the regression line. (Since the data points do not fall exactly on a line, the correlation is not 1.00. My assessment is they fall close enough to the line to rate a correlation of .96 instead of .93.)

At this point, the output of your calculator can confirm that the correlation coefficient is closer to 0.96. Mine says r = 0.9624.

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We expect a score of 68 is associated with about 8.93 study hours.

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The remaining part of Question:

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