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Finding the Best-Fit Line from Data

Very Hard Problem Solving And Data Analysis Data Interpretation

A researcher collected data on the number of hours students studied per week and their corresponding scores on a standardized test. The following table summarizes their findings:

Hours StudiedTest Score
570
1080
1585
2095

The researcher wants to establish a linear model to represent the relationship between the number of hours studied (x) and the test score (y). Based on the data, what is the equation of the best-fit line in slope-intercept form (i.e., $y = mx + b$) for this model?

Hint

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