5) The table shows the mortgage interest rates y at a local bank for the years 2000 through 2008.
Year since 2000, x
Rate (%), y
0
7.6
1
2
3
6.8 6.2 6.0
4 5 6 7 8
5.2
5.8
6.1
5.9 5.5
a) Make a scatter plot of the data.
b) Draw a line of fit.
c) Write an equation of the line of best fit.
d) Use the equation to predict the mortgage interest rate
for the year 2010.
e) Does the data show a positive, a negative,
or no relationship?
f) Interpret the relationship.
RATE (%)
10
8
MORTGAGE INTEREST RATES
YEARS