algebra, 1/26

a-c block:  1)   pg. 230-232,
                           #20-26 (rise/run), #27-34 (y2-y1/x2-x1)
                          #38-41 (y2-y1/x2-x1), #49-54
                  2)   study for quiz 4.4 on Wed.

d-block:     pg. 276-277, # 16-35