Concept explainers
To explain: Variations in z according to the given situation.
Answer to Problem 12OE
If x and y are both halved, z is multiplied by
Explanation of Solution
Given information:
The following variation:
z varies jointly as x and y.
The following situation:
x and y are both halved.
Calculation:
The given variation can be expressed as an equation as follows:
where k is a constant.
If x and y are both halved, the equation can be written as:
Chapter 8 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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