Rectangular Coordinate Homework System EXERCISES # 1, 2, 9, 13- 22, 23 , 25 , 28 , 35, 37, 39, 44, 45 In Exercises ] and 2, answer each question by locating ordered pairs on the graphs. 1. The graph indicates U.S. federal government tax revenues in billions of dollars. (a) If the ordered pair (r, y) represents a point on the graph, what does x represent? What does y represent? (b) Estimate revenue in 2002. (c) Write an ordered pair (x, y) that gives approximate federal tax revenues in 2002. (d) What does the ordered pair (2000, 2030) mean in the context of this graph? Federal Tax Revenues 2100 2000 1900 (billions of dollars) Revenue 1800 1700 1600 2000 2001 2002 2003 Year -.. . . . Source: U.S. Office of Management and Budget 2. The graph shows the percent of women in mathematics or computer science professions. (a) If the ordered pair (x, y) represents a point on the graph, what does x represent? What does y represent? (b) In what decade (10-yr period) did the percent of women in mathematics or computer science professions decrease? (c) Write an ordered pair (x, y) that gives the approximate percent of women in mathe matics or computer science professions in 1990. (d) What does the ordered pair (2000, 30) mean in the context of this graph? Women in Mathematics or Computer Science Professions 40 30 Percent 20 10 1970 1980 1990 2000 Year Source: U.S. Census Bureau and Bureau of Labor Statistics