Answer:
Option C
\(y=-10x\)
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form \(y/x=k\) or \(y=kx\)
In a direct variation the constant of proportionality k is equal to the slope m
In this problem we have
\(k=m=-10\)
the equation of the line is equal to
\(y=kx\)
substitute the value of k
\(y=-10x\)
