How do you tell wether the equation #3x + y = 6# represents direct variation and if so, how do you identify the constant of variation?
1 Answer
Feb 1, 2016
The equation does not represent direct variation. Consequently, there is no constant of variation.
Explanation:
You can determine whether or not an equation represents direct variation by first rewriting it in slope-intercept form:
#y=mx+b#
where:
In direct variation,
#3x+y=6#
#y=-3x# #color(red)(+6)#
In this case, the y-intercept is