According to the line graph showing plant height values 2, 4, 6, 9, 12 cm over five days, what is the height on day 4?

According to the line graph showing plant height values 2, 4, 6, 9, 12 cm over five days, what is the height on day 4?

• A. 2 cm
• B. 4 cm
• C. 6 cm
• D. 9 cm

Answer: (D)

Reading line graphs shows how a measurement changes over time. In this graph, each day corresponds to a point for plant height, with the heights given in order as 2, 4, 6, 9, 12 cm across five days. To find the height on day 4, take the fourth value in that sequence, which is 9 cm. So the plant is 9 cm tall on day 4. The other days line up with the other numbers: day 1 is 2 cm, day 2 is 4 cm, day 3 is 6 cm, and day 5 is 12 cm.