Concept explainers
a.
To state whetherrelationship between the number of seconds and the radius of circle 1 is direct variation.
a.
Answer to Problem 1GP
The relationship between the number of seconds and the radius of circle 1 is inverse variation.
Explanation of Solution
Given:
The graph of circle 1 with two points (2,5) and (6,4)
Concept Used:
Slope of a line is given by
If the slope of the line is positive, then it is direct variation.
If the slope of the line is negative, then it is inverse variation.
Calculation:
Here,
Since, m is negative
Therefore,
The relationship between the number of seconds and the radius of circle 1 is inverse variation.
b.
To state whether relationship between the number of seconds and the radius of circle 2 is direct variation.
b.
Answer to Problem 1GP
The relationship between the number of seconds and the radius of circle 2 is direct variation.
Explanation of Solution
Given:
The graph of circle 2 with two points (2,3) and (4,6)
Concept Used:
Slope of a line is given by
If the slope of the line is positive, then it is direct variation.
If the slope of the line is negative, then it is inverse variation.
Calculation:
Here,
Since, m is positive.
Therefore,
The relationship between the number of seconds and the radius of circle 2 is direct variation.
Chapter 9 Solutions
Glencoe Math Accelerated, Student Edition
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