Need a label of y-axis on a line graph?

I am designing a line graph to provide a relatively quick "view" of data trends, rather than the granular view of stock style. There will be only one trend line.

Currently, each of the data points will be labeled with its value y. The value x will be a unit of linear time.

If the maximum data point of the value there is aligned at the top of the chart, is it possible to only display the label of the x-axis at the bottom?

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