Objective- To graph equations in the form x + y = k and x - y = k. A bakery packages raisin muffins and bran muffins together by the dozen. Make a graph of all the possible combinations which could occur in a package. Let R = # of raisin muffins Let B = # of bran muffins R + B = 12

Let R = # of raisin muffins Let B = # of bran muffins R + B = 12 12 1 11 12 11 10 9 8 7 6 5 4 3 2 1 Line is decreasing. 2 10 3 9 Domain = Wholes. 4 8 Line is discrete. 5 7 Bran 6 6 7 5 8 4 9 3 10 2 11 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Raisin 12

Graph all ordered pairs of temperatures which would produce a daily range of 20 degrees. Range = High - Low Line is increasing. 20 = High - Low Domain = Reals Low Line is continuous. High Low 50 40 30 20 10 -20 -30 50 30 40 20 30 10 10 -10 -30 -20 -10 10 20 30 40 50 60 High -10 -30