Answer:
The temperature remains constant from 11AM to 2PM.
Explanation:
When we study a piecewise function, it's characterized by having different behaviours in its intervals.
In this case, the function is linear in every interval given. So, when the line is upwards, it meas the function is increasing. In this case increases from the beginning to 11AM.
Then, the function has a horizontal line, which means there's no change at all in the temperature from 11AM to 2PM. In other words, the temperature is constant during this time, because the line is horizontal.
At last, the temperature decreases, because it has a line that is going down.
Therefore, according to the graph, the temperature remains constant from 11AM to 2PM.