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A Vertical Line chart is a "rotated" line chart, where the lines are drawn vertically (top-bottom) instead of horizontally (left-right) (in the same way as a bar chart is a "rotated" version of a column chart) .
Figure 1 - Example of a Vertical Line chart
As with bar charts, the X and Y axes are switched when you select a vertical line chart. So the X axis is the axis with the labels ("Product/service quality", "Value for the price" etc.) and the Y axis is the axis with the values.
Option settings for the markers (the points on the line) and the line itself are under "Series" (go to Series Overview for more information).