1. 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

2. Let R = # of raisin muffins Let B = # of bran muffins R + B = 1212 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
Raisin 12

3. 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
High
-10
-30