Concept explainers
a.
A
Margo’s keyboarding speed | |
Week | Speed |
a.
Answer to Problem 15STP
A scatter plot and line of fit is drawn as:
Explanation of Solution
Given:
Margo’s keyboarding speed | |
Week | Speed |
Concept Used:
The slope intercept form is:
Where,
Slope:
Calculation:
Consider;
Week:
Speed:
Now, take the data points as:
Now, the slope is calculated as:
So, the slope intercept eq. can be written as:
Now, need to put
So, the final slope-intercept form is written as:
Now, the scatter plot of the data points and its line of fit eq. is drawn as:
Conclusion:
Hence, the scatter plot and the line of fit is drawn as above.
b.
The speed value of the Margo’s keyboarding speed after the six week of class.
b.
Answer to Problem 15STP
The speed value of the Margo’s keyboarding speed after the six week of class is
Explanation of Solution
Given:
Concept Used:
The slope intercept form is:
Where,
Slope:
Calculation:
Consider;
Week:
Speed:
The slope-intercept form is taken from above SUB-PART:
Put the value of the week
So the speed is estimated as
Conclusion:
Hence, the speed is estimated as
Chapter 8 Solutions
Pre-Algebra, Student Edition
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