Plotting Year on the X-axis and Price on the Y-axis and joining the five points shows a broadly rising price trend, with one small dip in Year 3 before a sharper rise in Years 4-5. …

Step 1 — Set up the axes. Since this is a time series, Year goes on the X-axis and Price (Rs. per kg) goes on the Y-axis, following the usual line-graph convention (time is always the X-axis variable for a trend graph).

Step 2 — Plot and join the points. Mark the five points — (Year 1, 20), (Year 2, 22), (Year 3, 21), (Year 4, 25), (Year 5, 30) — and join successive points with straight-line segments.

Step 3 — Read the shape.

• From Year 1 to Year 2, price rises by Rs. 2 (a mildly positive slope segment).
• From Year 2 to Year 3, price falls slightly, by Rs. 1 (a negative slope segment) — the one exception to the overall trend.
• From Year 3 to Year 4, price rises by Rs. 4.
• From Year 4 to Year 5, price rises by Rs. 5 — the steepest, most positive segment on the whole graph. …

Describing only the start and end values ('price rose from 20 to 30') without noting the Year-3 dip or which segment was steepest — a full 'describe the trend' answ …