Question

Brent is trying to figure out the relationship between the number of times his friends post on social media and their grade point averages (GPA). He records the collected data on a scatter plot. Which of the linear functions best models the line of best fit? What does the slope in the equation represent?



(1 point)
Responses

y=0.5x−4
; the slope represents the amount of increase in the GPA for each post
y is equal to 0 point 5 x minus 4; the slope represents the amount of increase in the GPA for each post

y=0.004x−4
; the slope represents the average number of posts per friend
y is equal to 0 point 0 0 4 x minus 4; the slope represents the average number of posts per friend

y=−0.004x+4
; the slope represents the amount of decrease in the GPA for each post
y is equal to negative 0 point 0 0 4 x plus 4; the slope represents the amount of decrease in the GPA for each post

y=−0.5x−4
; the slope represents the amount of decrease in the GPA for each post
y is equal to negative 0 point 5 x minus 4; the slope represents the amount of decrease in the GPA for each post

Answer 1

The linear function that best models the line of best fit is y=-0.5x-4. The slope represents the amount of decrease in the GPA for each post.