211k views
2 votes
Alexandra left her house at time zero and drove to the store, which is 9 blocks away, at a speed of 3 blocks per minute. Then she stopped and went into the store for 5 minutes. From there, she drove in the same direction at a speed of 5 blocks per minute until she got to the bank, which is 15 blocks away from the store. She stopped at the bank for 6 minutes. Then she drove home at a speed of 6 blocks every minute. Make a graph of showing the number of blocks away from home that Alexandra is xx minutes after she leaves her house, until she gets back home.

1 Answer

4 votes

The graph starts with a linear increase at a slope of 3, plateaus during stops, increases at a slope of 5, and decreases at a slope of 6.

Let's create a graph to represent Alexandra's distance from home over time.

We'll use the x-axis to represent time in minutes and the y-axis to represent the number of blocks away from home.

We'll break down Alexandra's journey into different segments:

Driving to the Store (0 to 3 minutes):

Alexandra is driving at a speed of 3 blocks per minute. Therefore, after each minute, she is 3 blocks farther from home.

This segment will be a straight line with a slope of 3.

Stopped at the Store (3 to 8 minutes):

Alexandra stops at the store for 5 minutes.

During this time, her distance from home remains constant at 9 blocks.

Driving to the Bank (8 to 14 minutes):

Alexandra now drives at a speed of 5 blocks per minute.

The graph will show a straight line with a slope of 5, indicating an increase of 5 blocks per minute.

Stopped at the Bank (14 to 20 minutes):

Alexandra stops at the bank for 6 minutes.

During this time, her distance from home remains constant at 24 blocks.

Driving Home (20 to 35 minutes):

Finally, Alexandra drives home at a speed of 6 blocks per minute.

The graph will show a straight line with a slope of 6, indicating she is getting closer to home.

By connecting these segments on the graph, you'll have a visual representation of Alexandra's journey, showing her distance from home at different points in time.

Alexandra left her house at time zero and drove to the store, which is 9 blocks away-example-1
User Grumdrig
by
8.9k points