Mortgage rates rose slightly during the week ended April 9, ending a two week run of record lows but still staying comfortably under 5 percent. According to Freddie Mac's Primary Mortgage Market Survey , the 30-year fixed-rate mortgage (FRM) averaged 4.87 percent with 0.7 point, up from the new record of 4.78 percent with 0.7 point established last week. The 15-year FRM averaged 4.54 percent, up two basis points from the previous week which had also set a new record. Fees and points averaged...