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what is an example of a direct variation?

what is an example of an inverse variation?

where and how are these used in science and engineering?

Direct variation - y = kx Inverse variation - y = k/x

Step-by-step explanation: Direct variation is used when a function is directly proportionate by a constant variable. Inverse variation is used when a function is inversely proportionate by a constant variable. Direct variation can be used to calculate salaries, time, or distance relating to a constant variable that is graphed as a straight line. Inverse variation can be used to calculate populations relating to a constant variable that is graphed as a curve.

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5