Write an equation of the direct variation that includes the point (–10, –17).

Question

anonymous · Answer

y-(-17)=m(x-(-10))

anonymous · Answer

i think ... if that makes any sense

imstuck · Answer

That is not the equation for direct variation...that is a point-slope equation for a line.

anonymous · Answer

oh my bad i didnt fully read the question

imstuck · Answer

Direct variation equations include a "k" as the constant.  y = kx is the direct variation equation.  So you're given your y as -10, and you're given your x as -17, so filling in the equation, we have
-10=-17k

imstuck · Answer

Sometimes we will have to solve for k and then write a new equation given a different set of x and y, but here all you have to do is write the equation using your x and y; not solving for anything.