If y is directly proportional to x and y=5 when x=2, what is the value of y when x=16?
2 Answers
Apr 15, 2018
Explanation:
when
When
Apr 15, 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=5" when " x=2#
#y=kxrArrk=y/x=5/2#
#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=5/2x=(5x)/2)color(white)(2/2)|)))#
#"when "x=16" then"#
#y=5/cancel(2)^1xxcancel(16)^8=5xx8=40#