Final Answer:
1. The bars would get taller, but their relative heights (proportions) would stay the same — the graph would look stretched vertically.
2. The bars would be spaced farther apart vertically (e.g., 0, 10, 20, ..., up to at least 300), but the bar heights would stay the same; the graph would look “squished” vertically.
3. Enrollment in physical science increased steadily from 1984 to 1988 (from ~55 to ~70 students), while chemistry enrollment rose slightly until 1986 (~55), then dropped to ~50 in 1987, and rose again to ~55 in 1988. Physical science consistently had higher enrollment than chemistry after 1985.
4. The legend explains which line (color/symbol) represents chemistry and which represents physical science, so we can tell them apart.
5. Independent variable: Years → plotted on the horizontal (x) axis.
6. Dependent variable: Number of Students → plotted on the vertical (y) axis.
Parent Tip: Review the logic above to help your child master the concept of understanding graphing worksheet answers.
