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Algebra 1

3.2.1 Selecting the Best Line

Algebra 13.2.1 Selecting the Best Line

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Warm Up

1.

Which of the lines is the better fit for the data in each scatter plot? Be prepared to show your reasoning.

Scatter plot showing wins on the x-axis and number of runs allowed per game on the y-axis, with data points, a solid blue line trending downward, and a dashed black line trending upward.
2.
Scatter plot showing a positive correlation between the average score from 10 surveys on the x-axis and the average amount spent on dinner on the y-axis, with a solid blue trend line and a dashed black line for reference.
3.
Scatter plot showing the cost of gas at a local station versus the price of crude oil per barrel, with data points, a black dashed trendline, and a blue fitted line, both indicating a positive correlation.
4.
A scatter plot that shows the number of floors in a building on the x-axis and the height of the building in feet on the y-axis. Two lines are also drawn to approximate the line of best fit: a solid blue line and a black dashed line.
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