The table shows the amount of pet food in cups remaining in an automatic feeder as a function of the number of meals the feeder has dispensed.

Write a function rule, in slope-intercept form, that models this situation:

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
2 hours ago

To write a function in slope-intercept form (\(y = mx + b\)), we need to identify the slope (\(m\)) and the y-intercept (\(b\)).

Since I don't have the actual data from the table you mentioned, let's outline the steps you would typically follow to derive this rule:

  1. Identify Points from the Table: Look for at least two data points in the table that represent the number of meals dispensed (\(x\)) and the amount of pet food remaining (\(y\)) in cups.

  2. Calculate the Slope (\(m\)): Use the formula for slope: \[ m = \frac{y_2 - y_1}{x_2 - x_1} \] where \((x_1, y_1)\) and \((x_2, y_2)\) are two points from the table.

  3. Find the y-Intercept (\(b\)): The y-intercept is the value of \(y\) when \(x = 0\). If the table includes a point where \(x = 0\), you can use that directly. Otherwise, you can use the slope and one of the points to find it using: \[ b = y - mx \]

  4. Write the Function: Once you have \(m\) and \(b\), plug these values into the slope-intercept form: \[ y = mx + b \]

Example

Assuming from the table you found these points:

  • Point 1: (1, 8) → After 1 meal, 8 cups remain.
  • Point 2: (3, 4) → After 3 meals, 4 cups remain.

Calculate the slope (\(m\)): \[ m = \frac{4 - 8}{3 - 1} = \frac{-4}{2} = -2 \]

Next, use one of the points to find the intercept (\(b\)): Using point (1, 8): \[ 8 = -2(1) + b \implies 8 = -2 + b \implies b = 10 \]

Now you can write the function: \[ y = -2x + 10 \]

This formula indicates that for each meal dispensed, 2 cups of food are used, starting from 10 cups.

If you provide the specific data from your table, I can help you derive the function rule directly!