Find the missing values in the table below so that it represents a linear function. Enter​ y_2y 2 ​ ​, y_3y 3 ​ ​, and y_4y 4 ​ ​ in order, in the boxes below. \def\arraystretch{1.5} \begin{array}{|c|c|c|c|c|c|} \hline x & 3 & 4 & 5 & 6 & 7 \\ \hline y & -5 & y_2 & y_3 & y_4 & -17 \\ \hline \end{array} x y ​ 3 −5 ​ 4 y 2 ​ ​ 5 y 3 ​ ​ 6 y 4 ​ ​ 7 −17 ​ ​