Get Rid of Extra Data Points on a Chart

[DZarc9820]

Hello!  I am making a graph and it is suppose to show sales data for each week (Wednesday to Wednesday) and so I have the data as 9/2, 9/9, 9/16, etc.  But for some reason the data on the horizontal axis is showing every date... 9/3, 9/4, 9/5 etc.  How can I change it to only show the week ending date and not all the days in between?? 

Thanks in advance! 

[#2]

@DZarc9820 

Double-click any of the x-axis labels to activate the Format Axis task pane.

Under Units, change the Major Unit to 7 (since 7 days = 1 week).

See the attached version.