Lemma
EasyRational expressions
OpenStax, Elementary Algebra 2e §8.9 Use Direct and Inverse Variation · Exercise 16 · Algebra · Rational expressions

Use Direct and Inverse Variation · Exercise 16

Solve.

The length that a spring stretches varies directly with a weight placed at the end of the spring. When Sarah placed a 10 pound watermelon on a hanging scale, the spring stretched 5 inches.

ⓐ Write the equation that relates the length of the spring to the weight.
ⓑ What weight of watermelon would stretch the spring 6 inches?

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OpenStax, Elementary Algebra 2e · §8.9 Use Direct and Inverse Variation · Exercise 16

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