in the workbook for tonal harmony edition 8 pages 71 and 72 how do i identify the non chord tones and the 6 4 chords

Workbook for tonal harmony, edition 8, chapter 9 part A, and number 2 on page 72 here are the requirements for the assignment:

  • Give key.
    Label all chords with roman numerals and inversion numbers. This is a typical classical broken chord
    accompaniment so do not analyze each bass clef note, e. g., the first two measures have just 1 chord, the third measure has just 2 chords.
    There are three six-four chords. Identify their type: passing, cadential, or pedal.
  • Complete exercise 2 at the top of p. 72 following these instructions.
    Give key.
    Label all chords with roman numerals and inversion numbers.
    There are two six-four chords. Identify their type: passing, cadential, or pedal.