Algebra-1

Question Analysis
This question tests the student's ability to calculate the proportion of students who meet a specific criterion (spending 4 or more hours on homework) using a line plot. The proportion is calculated as the number of students meeting the criterion divided by the total number of students, expressed as a percentage.

Key Concept Explanation
Proportion is a measure of the fraction of a dataset that meets a specific condition. It is often expressed as a percentage.

Step-by-step Solution
1. Count the number of students who spent 4 or more hours on homework: 9 students (4, 4, 4, 5, 5, 6, 6, 7, 8)