Question

the graph shows the weight of a bag of rice, y, as a function of the number of cups of rice used, x. how can you find the change in the y - values from 21 to 15? rate of change = \frac{change in y - values}{change in x - values} = \frac{?}{change in x - values} options: 15 + 21, 15 - 21, 15 × 21

Explanation:

Step1: Recall change - value formula

The change in a variable from an initial value $y_1$ to a final value $y_2$ is calculated as $y_2 - y_1$. Here, $y_1 = 21$ and $y_2=15$.

Step2: Calculate the change

The change in $y$-values is $15 - 21$.

Answer:

$15 - 21$