Question

1. A teacher grades 27 tests in 3 hours. Do these quantities (number of tests graded and time) vary directly or inversely?

2. It took Peter 3 hours to drive to his friend's home in Connecticut. He drove at an average speed of 54 mph. Do these quantities (time and speed) vary directly or inversely?

3. It took Peter 3 hours to drive to his friend's home in Connecticut. He drove at an average speed of 54 mph. Find the constant of variation.

Answer 1

9 of one number

Explanation:

step one :

given

let the number of test grade be g= 27

time taken t = 3 hours

step two :

the constant variation the number relates two variable that are directly proportional or inversely proportional

so that the direct variation is

g=t/k

k= g/t

k= 27/3

k= 9

Ans

Answer 2

k12 undefined

Explanation: