How do you determine whether the equation #-12x=6y# represents direct variation. If it does, how do you find the constant of variation?
2 Answers
Jan 2, 2018
If an expression can be re-formatted into the form:
Explanation:
In this case
can be written as
and therefore it is a direct variation.
Jan 2, 2018
Explanation:
#"the equation for direct variation is of the form"#
#•color(white)(x)y=kxlarrcolor(blue)"k is the constant of variation"#
#6y=-12x" can be expressed as"#
#"divide both sides by 6"#
#y=-2xlarrcolor(blue)"direct variation equation"#
#"with "k=-2#