How to Calculate the Line of Best Fit

Find the line of best fit

• y = 1.2x + 22

• y = 22x + 1.2

• y = 12x + 47

• y = 47x + 12

Find the line of best fit

• y = 0.42x - 20

• y = -20x + 0.42

• y = 67x + 8.5

• y = 8.5x + 67

Find the line of best fit

• y = 0.16x - 0.3

• y = -0.3x + 0.16

• y = 4.75x + 0.5

• y = 0.5x + 4.75

Find the line of best fit

• y = 0.27x + 5.8

• y = 5.8x + 0.27

• y = 6

• y = 0

Find the line of best fit

• y = 0.20x + 26

• y = 26x + 0.20

• y = 25x + 28

• y = 28x + 25

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

The table shows the height and shoe sizes of several students. Use the line of best fit to predict a student's height if they wear a size 7 shoe.

• 35 inches

• 59 inches

• 17 inches

• 63 inches

What is the equation of the line of best fit?

• y = 3/2x

• y = 30x

• y = 30x + 300

• y = 3/2x + 300

What is the line of best fit?

• f(x)= 5x+1.82

• cannot be determined

• f(x)= 1.82x + 5.02

• f(x)= 1.1x + 4.2

Caroline weighs her new puppy every month to see how much it has grown. If age is a and weight is W, which of these is the correct equation for the line of best fit?

• W = 3.6 + 8.9

• W = 3.6a + 8.9

• a = 8.9W + 3.6

• W = 8.9a + 3.6