Question

1. when should a line graph be used?

a) whenever you want
b) when showing change over time
c) when comparing data between different groups of categories
d) when comparing parts of a whole

Explanation:

Line graphs are designed to visualize trends and continuous changes by connecting data points over a sequential axis, most commonly time. Option a is incorrect as graphs have specific use cases. Option c describes bar graphs, and option d describes pie charts.

Answer:

b) When showing change over time