Predictions Using Line of Best Fit

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

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

Tags

CCSS.HSF-LE.A.1B

Which line is the best fit line for this scatter plot?

• a

• b

• c

• d

Tags

CCSS.8.EE.B.5

The line of best fit _____. Check all that apply.

• should include outliers.

• must pass through multiple points.

• should have about the same number of points above and below.

• can be used to make predictions.

Which line is the best fit line for this scatter plot?

• a

• b

• c

• d

Tags

CCSS.8.EE.B.5

Which line is the best fit line for this scatter plot?

• a

• b

• c

• d

Tags

CCSS.8.EE.B.5

Using the given scatter plot, estimate how many emails per day an 18 year old gets.

• 48

• 38

• 28

• 18

Using the scatterplot and best fit line, estimate what the resting heart rate is after 2 hours of exercise.

• 65

• 85

• 72

• 62

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

Tags

CCSS.8.EE.B.5

find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)

• y=65x+7

• y=1.14x+.64

• y=1.5x+64

Tags

CCSS.8.EE.B.5