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How to draw a broken line of temperature change according to the temperature record of a day?

The steps of drawing a temperature-time line chart are as follows:

Draw the coordinate axis and draw the first quadrant.

The horizontal axis represents time (0:00~24:00) and the vertical axis represents temperature.

Draw the corresponding (time, temperature) coordinate points on the coordinate axis,

Connect these points in turn with a ruler.

You can get the line chart of temperature change.