Concept explainers
To write :A equation for the direct variation of y.
Answer to Problem 27PPE
Equation for the direct variation is
Explanation of Solution
Given information:
The data is given by the following table:
x | y |
-6 | 9 |
1 | -1.5 |
8 | -12 |
Explanation:
The data is given by the following table:
x | y |
-6 | 9 |
1 | -1.5 |
8 | -12 |
Finding the equation for the direct variation as follows:
An equation is called a direct variation if it is in the form of
The value of the constant of variation is obtained by dividing x:
Find
The ratio
So y varies directly with x.
Therefore, the direct variation is
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