Page 485 - Algebra 1

Lesson Practice
Use the data in the table.
(Ex 1)
a. Make a scatter plot from the data in the table. Then draw a trend line on the scatter plot.
b. Find an equation for the trend line.
c. Use a graphing calculator to find the equation of the line of best fit for
(Ex 2)
State whether there is a positive correlation, a negative correlation, or no correlation between the data values.
(Ex 3)
d.
e.
f. the outdoor temperature and the number of sweaters sold in a store
g. hair color and height
Match each situation with the scatter plot that models it best.
(Ex 4)
h. time spend exercising and calories burned.
i. the number of dishes washed and the number of ounces of
detergent remaining in a bottle.
j. the population of a country and the number of states in the country.
Graph 1 Graph 2 Graph 3
x
1
2
3
4
5
6
y
14
27
43
53
70
85
the data in the table.
x
10
12
14
16
18
20
y
25
28
30
35
36
40
8
y
6
4
2
x
0
2
4
6
8
x
2
5
6
8
9
11
13
16
20
y
10
12
13
15
17
20
21
24
26
y
x
y
x
y
x
470 Saxon Algebra 1