Today in class we started by JoJo handing back DQ#13 and we went over problems 2 and 3 as a class. Discussing ways we could set up problems like that. After that he came around and checked the chapter review which every one had completed. We checked over it then went over problems #16 and #23. JoJo reminded us that slope and the rate of change are the same things. We worked on Point-slope problems here is a example.
y-y=m(x-x)
y-4= -9(x-1)
y-4=-9x+9(add four on both sides)
y=-9x+13
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