Use input out put tables to determine which graph accurately represents the function f (x) = 1/2x + 3 with inputs of -4, -3, 0, 2, and 4.

1 answer

To create an input-output table for the function \( f(x) = \frac{1}{2}x + 3 \), we will calculate the output \( f(x) \) for each input \( x \) given in the problem: -4, -3, 0, 2, and 4.

Here are the calculations:

  1. For \( x = -4 \): \[ f(-4) = \frac{1}{2}(-4) + 3 = -2 + 3 = 1 \]

  2. For \( x = -3 \): \[ f(-3) = \frac{1}{2}(-3) + 3 = -1.5 + 3 = 1.5 \]

  3. For \( x = 0 \): \[ f(0) = \frac{1}{2}(0) + 3 = 0 + 3 = 3 \]

  4. For \( x = 2 \): \[ f(2) = \frac{1}{2}(2) + 3 = 1 + 3 = 4 \]

  5. For \( x = 4 \): \[ f(4) = \frac{1}{2}(4) + 3 = 2 + 3 = 5 \]

Now we can compile these results into an input-output table:

| \( x \) | \( f(x) \) | |---------|------------| | -4 | 1 | | -3 | 1.5 | | 0 | 3 | | 2 | 4 | | 4 | 5 |

Summary of Results:

  • \( f(-4) = 1 \)
  • \( f(-3) = 1.5 \)
  • \( f(0) = 3 \)
  • \( f(2) = 4 \)
  • \( f(4) = 5 \)

With this table, you can now visually compare the corresponding values to the graphs available to find the one that accurately represents the function \( f(x) = \frac{1}{2}x + 3 \). Look for a graph that passes through the points:

  • (-4, 1)
  • (-3, 1.5)
  • (0, 3)
  • (2, 4)
  • (4, 5)

The correct graph will consistently show these values.