The table shows that each output(y) is obtained by multiplying each input(x) value by 2.
[tex]\begin{gathered} x\cdot2=y \\ 5\cdot2=10 \\ 7\cdot2=14 \\ 9\cdot2=18 \end{gathered}[/tex]
Thus, an equation for the given multiplicative relationship is:
[tex]y=2x[/tex]
