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) About Me  (Show Source):
You can put this solution on YOUR website!
"If y varies inversly with x" means that y=k%2Fx where 'k' is some constant number. So if "y=5 when x=7" means that 5=k%2F7. Solve for 'k' to get k=35. So we get the equation y=35%2Fx. Finally, plug in x=4 to get y=35%2F4=8.75. So you have the correct answer. Good job.