Question

3. The scatter plot represents the age x of a driver in years and the monthly cost of insurance y

in dollars for a specific car model. The equation of the line of best fit for this data is
y=474.34-7.445x
Cost (dollars)
A
350
300
250
200
150
100
50
increases
decreases
0
5
10
Monthly Auto Insurance Costs
Write the values that complete each sentence.
Part A
The slope of the line of best fit is
The y-intercept of the line of best fit is
Part B
Circle an answer choice in each box to make each statement true.
The slope of the line of best fit means that as the age of the driver (A), the predicted monthly
cost of insurance (B)
B
15
20
Age of Driver (years)
The value of the y-intercept (C) make sense in this context. The predicted monthly cost of
surance for a driver who is 0 years old (D) possible for this situation.
25
decreases
30
increases
stays the same
35
does
40
does not
D
is
is not




NEED HELP NOWWWWW

Answer 1

Part A:
The slope of the line of best fit is -7.445. This means that for every one-unit increase in the age of the driver, the predicted monthly cost of insurance decreases by 7.445 dollars.

The y-intercept of the line of best fit is 474.34. This means that the predicted monthly cost of insurance for a driver who is 0 years old is 474.34 dollars.

Part B:
The slope of the line of best fit means that as the age of the driver (A) increases, the predicted monthly cost of insurance (B) decreases.

The value of the y-intercept (C) makes sense in this context. The predicted monthly cost of insurance for a driver who is 0 years old (D) is possible for this situation.