Hi Peter,
Neither Pages nor Numbers support links between different documents. If you want the chart in Pages, your choices are to paste an image of the chart into Pages,
or to paste the Numbers table into pages and create the chart from the pasted version of the table,
or to create both the table and the chart in Pages.
The first option places a fixed version of the chart as it appeared when copied. Changes to the table will not result in changes to the chart.
The second and third will result in a table in Pages that is linked to the chart. A change in the data in the table will cause a change in the chart.
Regards,
Barry