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konstantin123 [22]
3 years ago
9

A teacher grades 27 tests in 3 hours Find the constant of variation

Mathematics
1 answer:
ANTONII [103]3 years ago
3 0

Answer:

<h2>9</h2>

Step-by-step explanation:

Step one:

given

Let the number of tests graded be g = 27

time taken t = 3 hours

Required

The constant relating the time and the number of tests

Step two:

<em>"The constant of variation is the number that relates two variables that are directly proportional or inversely proportional to one another."</em>

so that the direct variation is

g∝kt

g=t/k

k= g/t

k=27/3

k=9

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