the local gas station charges a certain rate (dollars per liter) for gas, as shown in the graph below. what…

Explanation:

Step1: Identify two points on the line

Let's assume two points $(x_1,y_1)$ and $(x_2,y_2)$ on the line. From the graph, if we take two clear - cut points, say $(0,6)$ and $(10,10)$.

Step2: Use the slope formula

The slope formula for a line $y = mx + b$ (where $m$ is the rate of change) is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 0,y_1 = 6,x_2=10,y_2 = 10$. Then $m=\frac{10 - 6}{10-0}=\frac{4}{10}=0.4$.

Answer:

$0.4$