Exploring Line of Best Fit

Find the equation of the line of best fit for the given data

• y = 163.41x+1.49

• y =- 163.41x+ 4.19

• y =- 4.19x+163.41

• y = 4.19x -163.41

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

Write the linear regression equation for the following data points. Round to the nearest hundredth.

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y=2x+10

• y= 10

Imagine you're helping Zoe, Mia, and Isla find the perfect line of best fit for their scatter plot project. Which of the following lines do you think will earn them an A+?

• A

• B

• C

• D

Answer explanation

Line C is the best choice as it closely follows the trend of the data points in the scatter plot, minimizing the distance from the points to the line, which is essential for a strong line of best fit.

• y = 1.45x + 22
• y = -2x + 15
• y = 1.33x + 30
• y = -1.5x + 24

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

• y = x ; 20
• y = x + 2 ; 22
• y = 2 ; 2
• y = 0.5x + 2 ; 12

Which of the following could be a possible line of best fit for the data?

• y = 3x + 0

• y = 5/6x + 490

• y = -2x + 470

• non linear

Which equation best represents the line of best fit shown below?

• y = 4x

• y = 6x + 4

• y = 3x + 4

• y = 4x + 4