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

Here the relation is related to direct variation. So if we have to relate x and y with direct variation, we can state it like y = k x , where k is the constant of proportionality.

We have the point given that is (-10,-17). Here x=-10 and y=-17 . So we substitute this point in y=k x and solve for x. That is ,

-17 = -10k

So the required equation is

b and c

step-by-step explanation:

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)