How do I change from double space to single space when writing in Writer version 4.3.5.2?

I am trying to type a letter in Writer and it is coming up as double space. I want to make it single space but can’t seem to find where to make that change.

On my system there are several ways to alter the line spacing. There is an icon for line spacing to the right of the icons for bold, underline, italic, numbering justified etc. You can also select spacing as a paragraph style option. Right Click choose PARAGRAPH > Indents and Spacing and then select the spacing you want.
Hope this helps… Peter