Answer:
1. The average speed of Tracie's bus as it heads home is
miles for each minute.
Step-by-step explanation:
The graph indicates that,
the horizontal axis displays time in minutes, while the vertical axis denotes the distance remaining to home in miles.
Moreover, the function's graph descends by 1 mile every 2 minutes.
This means that, as time progresses, the distance from home reduces.
In essence, the bus is moving nearer to Tracie's residence.
Additionally, since the distance shrinks by 1 mile for every 2 minutes elapsed,
the rate of decline is calculated to be
miles per minute.
<pFurthermore,

The slope signifies the speed of the bus as it moves towards home.
This concludes that 'Tracie's bus travels towards her home at an average speed of
miles per minute.'