How do you write the direct variation equation if y=4 when x=16, find y when x=6?

1 Answer
Apr 6, 2018

y=3/2

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=4" when "x=16

y=kxrArrk=y/x=4/16=1/4

"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=1/4x)color(white)(2/2)|)))

"when "x=6" then "

y=1/4xx6=6/4=3/2