
Concept explainers
(a)
To find: Which situation is proportional.
(a)

Answer to Problem 16PPS
The graph B is proportional
Explanation of Solution
Given: Suppose Isabel decide to save
Given:
From the graph given it is concluded that
The graph B is proportional because the rates are consistent.
The graph A does not have the same rate.
(b)
To Compare: The graphs. Which graph represents the proportional situation.
(b)

Answer to Problem 16PPS
The graph B is proportional
Explanation of Solution
Given: Suppose Isabel decide to save
Given:
From the graph given it is concluded that
The graph B is proportional because the rates are consistent.
The graph A does not have the same rate.
As
In the graph B in the first week the money save is
(C)
To Make: The table showing the first week of savings for each girl.
(C)

Answer to Problem 16PPS
Explanation of Solution
Given: Suppose Isabel decide to save
The tabular form of the data is
(d)
To Find: The equation that represent the situation.
(d)

Answer to Problem 16PPS
For graph A:
For graph B:
Explanation of Solution
Given: Suppose Isabel decide to save
For the graph A
Slope is
The slope of the line is
Now
Thus
Thus the equation of the line for the graph A is
Similarly
For the graph B
The slope of the line is
Now
Thus
Thus the equation of the line for the graph B is
Chapter 6 Solutions
Pre-Algebra, Student Edition
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