Use the image to answer the question.

A curved line is graphed on a coordinate plane. The x-axis ranges from negative 5 to 5 in increments of 1. The y-axis ranges from negative 200 to 200 in increments of 100.

Use an input-output table to determine whether the graph accurately displays the function f(x)=4x3−x
using the inputs of −3
, −2
, −1
, 0, and 1.

Enter 1 if the graph is accurate.

Enter 2 if the graph is not accurate.

(1 point)

1 answer

To determine if the graph accurately displays the function \( f(x) = 4x^3 - x \), we can calculate the values of \( f(x) \) for the given inputs of \( -3, -2, -1, 0, \) and \( 1 \) and use an input-output table.

Calculating \( f(x) \):

  1. For \( x = -3 \): \[ f(-3) = 4(-3)^3 - (-3) = 4(-27) + 3 = -108 + 3 = -105 \]

  2. For \( x = -2 \): \[ f(-2) = 4(-2)^3 - (-2) = 4(-8) + 2 = -32 + 2 = -30 \]

  3. For \( x = -1 \): \[ f(-1) = 4(-1)^3 - (-1) = 4(-1) + 1 = -4 + 1 = -3 \]

  4. For \( x = 0 \): \[ f(0) = 4(0)^3 - 0 = 0 \]

  5. For \( x = 1 \): \[ f(1) = 4(1)^3 - 1 = 4(1) - 1 = 4 - 1 = 3 \]

Now we have the following input-output table:

\[ \begin{array}{|c|c|} \hline x & f(x) \ \hline -3 & -105 \ -2 & -30 \ -1 & -3 \ 0 & 0 \ 1 & 3 \ \hline \end{array} \]

Now, if you can compare these values with the corresponding points on the graph, we can determine if the graph is accurate or not. Based on this table:

  • Verify the points \((-3, -105)\), \((-2, -30)\), \((-1, -3)\), \( (0, 0) \), and \((1, 3)\) on the graph.

If all calculated points correspond to the points on the graph, then you would enter 1. If any of these points do not match the graph, then you would enter 2.

Since I cannot see the graph itself, I will instruct you to compare the values based on the calculations provided, and you can make the decision based on the comparison.