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)|)))
