Let's analyze the graph and the questions:

1. The graph shows the relationship between "Temperatura" (Temperature in °C) and "Altura" (Height in kilometers).
2. It appears to be a linear relationship, where the temperature decreases as the altitude increases.

Let's answer the questions based on the graph:

(a) ¿Cuál es la temperatura a 0 kilómetros?

At 0 km on the x-axis, the temperature on the y-axis is 40°C, so:

• Respuesta: 40°C

(b) Elegir el enunciado que mejor describa cómo se relacionan la altura y la temperatura.

From the graph, as altitude increases, the temperature decreases. Therefore, the correct statement is:

• A medida que la altura aumenta, la temperatura disminuye.

¿A qué tasa disminuye la temperatura?**

To find the rate at which temperature decreases (slope), we can use two points from the graph:

• At 0 km, the temperature is 40°C.
• At 8 km, the temperature is 0°C.

The slope is calculated as: $\text{slope} = \frac{\Delta T}{\Delta h} = \frac{0°C - 40°C}{8 \, \text{km} - 0 \, \text{km}} = \frac{-40°C}{8 \, \text{km}} = -5°C \, \text{por kilómetro}$

So, the temperature decreases at a rate of 5°C por kilómetro.

Would you like more details or have any further questions?

Here are some related questions:

1. How do we calculate the slope of a line from a graph?
2. What is the equation of the line based on this graph?
3. How could we interpret the y-intercept in this case?
4. What would the temperature be at 10 kilometers if the trend continued?
5. How would this graph change if the planet had a thinner atmosphere?

Tip: The slope of a line is crucial for understanding the rate of change between two variables.