Slope Intercept Form Worksheet Page 14
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22Name _______________________________
Date_____________
Worksheet
Worksheet E E E E 5 5 5 5 : : : : Linear Regression
Worksheet
Worksheet
Linear Regression
Linear Regression
Linear Regression
Solve. Assume a linear relationship fits each set of data.
( )
1. A long-distance telephone company advertised the following rates: “5 minutes
for just
m
( )
(
)
$.85
and 10 minutes for just $1.10.” Use the ordered pairs
.
p
, m p
a. Find the linear equation for these data points
b. Use the linear equation to find the cost of a 20-minute phone call.
( )
( )
15 C °
2. For a ground temperature of
, the air temperature
at an altitude of
is
t
500 m
h
( )
10 C °
− °
. At
, the air temperature is
. Use the ordered pair
.
2000 m
5 C
, h t
a. Find a linear equation for these data points.
b. Use this linear equation to find the air temperature at
1500 m
( )
( )
3. A school record in a certain race is 1970
was 3.8 minutes
. In 1990 the school
t
r
( )
record was 3.65 minutes. Use the ordered pairs
.
, t r
a. Find the linear equation for these data points.
b. Use this linear equation to predict the school’s record in 2000.
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