Assume y varies inversely as x, how do you write the equation given y=18 when x=4?
1 Answer
Oct 30, 2017
Explanation:
#"the initial statement is "yprop1/x#
#"to convert to an equation multiply by k the constant"#
#"of variation"#
#rArry=kxx1/x=k/x#
#"to find k use the given condition"#
#y=18" when "x=4#
#y=k/x#
#rArrk=yx=18xx4=72#
#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=72/x)color(white)(2/2)|)))#
