Question

The scatterplot shows the relationship between the number of slices of pizza eaten by each member of a football team (x) and the number of laps around the block the player could run immediately afterward (y). The equation of the regression line shown on the graph is y = 10 – 0.67x:

Use the equation above to predict the number of laps a player who ate 7 slices can run.

Answer 1

5.31

Explanation:

Given the regression line equation,
`y = 10 - 0.67x`, where,

x = number of slices of pizza eaten

y = number of laps run immediately

Number of laps run by a player who ate 7 slices of pizza can be predicted by plugging in x = 7 into the regression line equation to find y:

`y = 10 - 0.67x`

`y = 10 - 0.67(7)`

`y = 10 - 4.69`

`y = 5.31`