How do you write an equation for the direct variation that includes the given point: (7, -2)?
1 Answer
Jun 17, 2017
Explanation:
#"the initial statement is " ypropx#
#"to convert to an equation multiply by k the constant"#
#"of variation"#
#rArry=kx#
#"use the given point " (7,-2)" to find k"#
#y=kxrArrk=y/x=(-2)/7=-2/7#
#"the equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=-2/7x)color(white)(2/2)|)))#
