If y varies inversely as x and If y = -32 when x = 2, what is x when y = 4?
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y varies inversely as x
=> y= k/x
=>xy=k. .........(1)
Now according to question
y= -32 when x=2
=> 2×(-32)=k
=>k = -64
Therefore equation (1)becomes
xy = -64
Hence, when y=4.
=>x×(4)=-64
=> x= -16.
This is your required answer.
I hope you will get it.
=> y= k/x
=>xy=k. .........(1)
Now according to question
y= -32 when x=2
=> 2×(-32)=k
=>k = -64
Therefore equation (1)becomes
xy = -64
Hence, when y=4.
=>x×(4)=-64
=> x= -16.
This is your required answer.
I hope you will get it.
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