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Grade 8 Algebra: Comparing Functions

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Level 2

Greater initial value

  1. 1. Which has the greater initial value:
    A:y=2x+7B:x012y468\begin{array}{ll} \textbf{A:} & y = 2x + 7 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 0 & 1 & 2 \\ \hline y & 4 & 6 & 8 \end{array} \end{array}
  2. 2. Which has the greater initial value:
    A:y=−3x+2B:x012y52−1\begin{array}{ll} \textbf{A:} & y = -3x + 2 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 0 & 1 & 2 \\ \hline y & 5 & 2 & -1 \end{array} \end{array}
  3. 3. Which has the greater initial value:
    A:y=x−4B:x123y012\begin{array}{ll} \textbf{A:} & y = x - 4 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 1 & 2 & 3 \\ \hline y & 0 & 1 & 2 \end{array} \end{array}
  4. 4. Which has the greater initial value:
    A:y=4x+3B:x123y579\begin{array}{ll} \textbf{A:} & y = 4x + 3 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 1 & 2 & 3 \\ \hline y & 5 & 7 & 9 \end{array} \end{array}
  5. 5. Which has the greater initial value:
    A:y=12x+6B:x246y91011\begin{array}{ll} \textbf{A:} & y = \tfrac{1}{2}x + 6 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 2 & 4 & 6 \\ \hline y & 9 & 10 & 11 \end{array} \end{array}
  6. 6. Which has the greater initial value:
    A:y=−2x+10B:x123y111417\begin{array}{ll} \textbf{A:} & y = -2x + 10 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 1 & 2 & 3 \\ \hline y & 11 & 14 & 17 \end{array} \end{array}
  7. 7. Which has the greater initial value:
    A:y=5xB:x123y210\begin{array}{ll} \textbf{A:} & y = 5x \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & 1 & 2 & 3 \\ \hline y & 2 & 1 & 0 \end{array} \end{array}
  8. 8. Which has the greater initial value:
    A:y=3x−1B:x−101y−6−22\begin{array}{ll} \textbf{A:} & y = 3x - 1 \\[14pt] \textbf{B:} & \begin{array}{c|ccc} x & -1 & 0 & 1 \\ \hline y & -6 & -2 & 2 \end{array} \end{array}