Question

04:Pretest 4 Graphs and Functions10Find the constant of variation k for the direct variation,X1010114

Answer 1

Since constant of variation k is calculated by dividing y-coordinate and x-coordinate .

From the given table we can see that

$f(x)=-1\text{ when x=2}$

So

$\begin{gathered} k=\frac{-1}{2} \\ =-0.5 \end{gathered}$

So constant of variation k is -0.5