Alexander left his house at time zero and drove for 8 minutes to the store at a speed of 1 block every 4 minutes. Then he stopped and went into the store for 7 minutes. From there, he drove in the same direction at a speed of 1 block per minute until he got to the bank, which is 2 blocks away from the store. He stopped at the bank for 2 minutes. Then he drove home at a speed of 2 blocks every minute. Make a graph of showing the number of blocks away from home that Alexander is x x minutes after he leaves his house, until he gets back home.