Use the table of values below to answer the questions. Find the first differences. Write them on the table. [A \( \quad / 3 ]\) Is the relation linear or non-linear? [ \(K \quad / 1]\) What is the initial value and the rate of change?  \( \left[ \begin{array} { l l } { K } & { / 2 } \end{array} \right]\)