Concept explainers
Write and graph a direct variation equation that relates the total cost and the number of songs.
Answer to Problem 39PPS
The direct variation equation is
Explanation of Solution
Given:
Music downloads are $0.99 per songs. The total cost of s songs is T.
Concept Used:
Music downloads are $0.99 per songs. The total cost of s songs is T.
The direct variation equation is
Calculation:
The direct variation equation is
The slope of
Write the slope as Graph (0, 0) From there move up 0.99 unit and 1 unit to find another point. Then draw a line containing the points. |
Thus, the direct variation equation is
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