Reading a Graph Alongside a Passage

A graph packs a paragraph's worth of change into one shape. A line that drops and then runs flat is telling you two things at once: a period of change and a period of stability. Your job is to trace it left to right, the same direction time moves, and narrate what you see in plain terms. Steady fall, sudden spike, flat stretch, slow climb. The passage beside the graph usually makes a claim in words; the graph either backs that claim up with numbers or adds a detail the words never mention, like exactly when something happened.

When two lines share a panel, the moment they cross is almost always the point of the question. One series leads, then the other takes over, and the crossing marks the exact spot where the comparison flips. You don't need the precise coordinates, just the order: which line is on top before the crossing, and which after. That's usually enough to answer what's asked, since reading comprehension questions care about the relationship, not the decimal value.

Adding a second axis raises the stakes. A bar series measured in millimetres and a line series measured in percent can sit on the same panel without sharing any real comparison, because each has its own ruler running up the side. A rainfall bar and a storage line that happen to touch the same height on the page are not telling you rainfall equals storage. Read each series against its own labeled axis first, then compare trends, not raw heights, across the two scales.