Answer
The data in the table cannot be modeled by a linear equation.
Work Step by Step
The rate of change for consecutive data pairs in the table.
$\Rightarrow \frac{5-(-1)}{4-2}=\frac{5+1}{2}=\frac{6}{2}=3$
$\Rightarrow \frac{15-5}{6-4}=\frac{10}{2}=5$
Because the rate of change is not constant, the data in the table cannot be modeled by a linear equation.
