sophiesullivan0210 sophiesullivan0210

26-01-2021
Mathematics

contestada

y is inversely proportional to x.
When y = 7, x= 9
Work out the value of y when x = 21.

Respuesta :

clarch19 clarch19

26-01-2021

Answer:

y = 3

Step-by-step explanation:

y is inversely proportional to x setup: y = k/x

'k' is the constant of variation; find this first

7 = k/9

k = 63

now use 'k' to find 'y'

y = 63/21

y = 3

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