SOLUTION: If y varies inversly with x & y=5 when x=7 what is the value of y when x=4
I got 8.75
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Question 316000: If y varies inversly with x & y=5 when x=7 what is the value of y when x=4
I got 8.75
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
"If y varies inversly with x" means that where 'k' is some constant number. So if "y=5 when x=7" means that . Solve for 'k' to get . So we get the equation . Finally, plug in x=4 to get . So you have the correct answer. Good job.
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