write an equation of the direct variation that includes the give points (-5,-10)  

Expert Answers
embizze eNotes educator| Certified Educator

We are given that y varies directly with x. Then y=kx for some real number k.

Substituting the known values of x and y from the point (-5,-10) we get:

-10=k(-5) ==> k=2


The equation of a line where y varies directly with x including the point (-5,-10) is y=2x