algebra, 2/26

a-c block:   1) prac. sheet 4.6C, #1,2, 5-12 (graph) , 19-24 (don't graph)
                   2) study for quiz 4.6 on Thursday

d-block:      1) prac. 5.2C, #1-22
                    2) study for quiz 5.1-5.2 on Thursday