If y varies directly with x, and y = 28 when x = 7, how do you write the direct linear variation equation?
1 Answer
Apr 14, 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=28" when "x=7#
#y=kxrArrk=y/x=28/7=4#
#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=4x)color(white)(2/2)|)))#
