Final answer:
The student has to walk 7 blocks to get home from the school and since they have not started walking towards home from the school yet, 100% of the walk home remains.
Step-by-step explanation:
The student is seeking to determine the percentage of their walk home from school that is remaining after reaching the school. The school is positioned at coordinates (2, -1), meaning it is 2 blocks east and 1 block south of the center of town. The student’s home is 5 blocks west and 2 blocks north from the school. To find the shortest path home that passes by the school, the student should add the distances east/west and north/south that they need to travel after leaving the school.
The student walks 5 blocks west and 2 blocks north from the school to get home. Therefore, the total number of blocks from the school to home is 5 + 2 = 7 blocks. At the school, the student has not started the walk home yet, so 100% of the walk home remains.