9.2 prob 40.WMV
9.3 prob 42.WMV
9.4 prob 15.WMV
9.4 prob 45.WMV
10.2 prob 45.WMV
10.2 prob 49.WMV
Reminder:
9.2 is parabolas
9.3 is ellipses
9.4 is hyperbolas
10.2 is solving systems of equations using matrices