First we fill the table like:
[tex]\begin{gathered} 0\to0 \\ 1\to2 \\ 2\to4 \\ 3\to6 \\ 4\to8 \\ 5\to10 \\ 6\to12 \end{gathered}[/tex]Now we can graph the data like:
c) yes they follow a line so they are proportional
d)
and we can fide the rate or the slope like:
[tex]\begin{gathered} m=\frac{10-0}{5-0} \\ m=2 \end{gathered}[/tex]