Verified answer

SOLUTION

• y = k/x is the mathematical phrase of the word y varies inversely as x and y

Now, First we will find its constant (k)

• y = k/x , y = 4 and x = 9
• 4 = k/9
• 4(9) = k
• 36 = k

Lastly finding for the unknown variable

• y = k/x , k=36 and x = 12
• y = 36/12
• y = 4

ANSWER

• OPTION B ( y = 4 )

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