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Grade 8 Algebra: Identifying Functions

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Level 2

Tables

  1. 1. Is the relation a function:
    x1234y57911\begin{array}{c|cccc} x & 1 & 2 & 3 & 4 \\ \hline y & 5 & 7 & 9 & 11 \end{array}
  2. 2. Is the relation a function:
    x1123y2468\begin{array}{c|cccc} x & 1 & 1 & 2 & 3 \\ \hline y & 2 & 4 & 6 & 8 \end{array}
  3. 3. Is the relation a function:
    x−2−101y4101\begin{array}{c|cccc} x & -2 & -1 & 0 & 1 \\ \hline y & 4 & 1 & 0 & 1 \end{array}
  4. 4. Is the relation a function:
    x0122y3456\begin{array}{c|cccc} x & 0 & 1 & 2 & 2 \\ \hline y & 3 & 4 & 5 & 6 \end{array}
  5. 5. Is the relation a function:
    x5555y1234\begin{array}{c|cccc} x & 5 & 5 & 5 & 5 \\ \hline y & 1 & 2 & 3 & 4 \end{array}
  6. 6. Is the relation a function:
    x1234y6666\begin{array}{c|cccc} x & 1 & 2 & 3 & 4 \\ \hline y & 6 & 6 & 6 & 6 \end{array}
  7. 7. Is the relation a function:
    x−1010y2345\begin{array}{c|cccc} x & -1 & 0 & 1 & 0 \\ \hline y & 2 & 3 & 4 & 5 \end{array}
  8. 8. Is the relation a function:
    x2468y1313\begin{array}{c|cccc} x & 2 & 4 & 6 & 8 \\ \hline y & 1 & 3 & 1 & 3 \end{array}