If y varies directly as x and y = 10 when x = 2, what is y when x = 3?
2 Answers
Apr 24, 2018
Explanation:
Given
#y ∝ x#
#y = kx#
When
When
Apr 24, 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=10" when "x=2#
#y=kxrArrk=y/x=10/2=5#
#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=5x)color(white)(2/2)|)))#
#"when "x=3" then"#
#y=5xx3=15#