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Time Studied per Day Weekly Test Grade (min) (percent) y 60 77 70 79 80 81 90 83 100 85 1 of 5

Time Studied per Day Weekly Test Grade (min) (percent) y 60 77 70 79 80 81 90 83 100 85 1 of 5

College Algebra
College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 17E: Sports The ordered pairs below give the winning times (in seconds) of the women’s 100-meter...
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Es notes, homework, test corrections, and vocabulary. She also records the amount of time per day that she studies and does homework. The following data represent the amount of time she studied per day and her weekly test grades. Time Studied per Day Weekly Test Grade (min) (percent) y 60 77 70 79 80 81 90 83 100 85 Part 1 of 5 (a) Graph the points on a rectangular coordinate system. Do the data points appear to follow a linear trend? 100- 90- 80- 70- 20- 10- Test Score (%)
Transcribed Image Text:Es notes, homework, test corrections, and vocabulary. She also records the amount of time per day that she studies and does homework. The following data represent the amount of time she studied per day and her weekly test grades. Time Studied per Day Weekly Test Grade (min) (percent) y 60 77 70 79 80 81 90 83 100 85 Part 1 of 5 (a) Graph the points on a rectangular coordinate system. Do the data points appear to follow a linear trend? 100- 90- 80- 70- 20- 10- Test Score (%)
Part 2 of 5 The data points appear to follow a linear trend. Part: 2 / 5 Part 3 of 5 (b) Find a linear equation that relates Loraine's weekly test score y to the amount of time she studies per day x. Express numbers in exact simplest form. (Hint: Pick two ordered pairs from the observed data and find an equation of the line through the points.) The linear equation in slope-intercept form (y=mx+b) is O=0
Transcribed Image Text:Part 2 of 5 The data points appear to follow a linear trend. Part: 2 / 5 Part 3 of 5 (b) Find a linear equation that relates Loraine's weekly test score y to the amount of time she studies per day x. Express numbers in exact simplest form. (Hint: Pick two ordered pairs from the observed data and find an equation of the line through the points.) The linear equation in slope-intercept form (y=mx+b) is O=0
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