The scatter plot and regression line below show the relationship between how early students turned in an exam (measured by minut
es remaining in the exam) and their exam scores
The fitted line has a y-intercept if 87.
What is the best interpretation of this y-intercept?
The fitted line has a y-intercept if 87.
What is the best interpretation of this y-intercept?
2 answers:
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The first thing we must do for this case is to define variables.
We have then:
x: weight of the big box
y: weight of the small box.
We now write the system of equations that models the problem:
We apply the graphic solution.
For this, the solution will be the cut point of both lines.
We have then that the solution occurs for the point:
Note: see attached image
Answer:
Weight of each large box: 15.5 Kilograms
Weight of each small box: 13.25 Kilograms
We have then:
x: weight of the big box
y: weight of the small box.
We now write the system of equations that models the problem:
We apply the graphic solution.
For this, the solution will be the cut point of both lines.
We have then that the solution occurs for the point:
Note: see attached image
Answer:
Weight of each large box: 15.5 Kilograms
Weight of each small box: 13.25 Kilograms
