If y varies directly as x and y = -24 when x = 8, then how do you find y when x = 10?
1 Answer
Mar 30, 2018
Explanation:
#"the initial statement is "ypropx#
#"to convert to an equation multiply by k the constant"#
#"of variation"#
#rArry=kx#
#"to find k use the given condition"#
#y=-24" when "x=8#
#y=kxrArrk=y/x=(-24)/8=-3#
#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=-3x)color(white)(2/2)|)))#
#"when "x=10" then"#
#y=-3xx10=-30#
