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Example Questions
Example Question #1 : Understanding Rational Expressions
Solve:
If varies directly as , and when , find when .
Possible Answers:
Correct answer:
Explanation:
The formula for a direct variation is:
Plugging in our values, we get:
Example Question #2 : Understanding Rational Expressions
If two boxes have the same depth and capacity, the length is inversely proportional to the width. One box is long and wide. A second box (same depth and capacity) is long. How wide is it?
Possible Answers:
Correct answer:
Explanation:
The formula for an indirect variation is:
Plugging in our values, we get:
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