Assignment:
1 Which of the ordered pairs (3, 1), (0, -4), (-4, 0), (-3, -7) are solutions for the equation x - y = 4?
A) (0, -4), (-4, 0), and (-3, -7)
B) (-4, 0) and (-3, -7)
C) (0, -4) and (-3, -7)
D) (3, 1) and (-4, 0)
2 Which of the ordered pairs is a solution for the equation 4x - 2y = 8?
A) (0, 4) B) (-2, 0)
C) (-2, -4) D) (0, -4)
3 Complete the ordered pairs for the equation y = 6x + 6.
4 An employee who produces x units per hour earns an hourly wage of y = 0.55x + 12 (in dollars). Find the hourly wage for an employee who produces 20 units per hour.
A) $23.00 B) $23.50 C) $22.70 D) $23.40
5 Give the coordinates of the point graphed below.
A) (5, -4) B) (-4, 5) C) (4, -5) D) (-5, 4)
![1226_coordinates of the point.jpg](https://secure.tutorsglobe.com/CMSImages/1226_coordinates of the point.jpg)
6 Give the coordinates of the points graphed below.
![2382_Random point graph.jpg](https://secure.tutorsglobe.com/CMSImages/2382_Random point graph.jpg)
7 Graph x + y = -2.
8 Graph y = 3x.
9 Graph 3x + 2y = 6.
10 Graph y = -x/2
11 Graph using the intercept method: 5x - y = 5.
12 Graph by first solving for y.
x - 3y = 9
13 Find the slope of the line passing through the points (1, 2) and (3, 6).
A) 0 B) 1 C) 2 D) Undefined
14 Find the slope of the line passing through the points (-4, 0) and (-4, -2).
A) 0 B) 1 C) -2 D) Undefined
15 Find the slope of the graphed line.
A) 2 B) -2 C)1/2 D) - 1/2
![1090_Slope of graph line.jpg](https://secure.tutorsglobe.com/CMSImages/1090_Slope of graph line.jpg)
16 If y varies directly with x, and y = 30 when x = 6, find the constant of variation k.
17 Let y vary directly with x, with a constant of variation k = 3. Graph the equation of variation.
18 Use the following table to answer the question.
Population of Europe by Age Groups
Population (in thousands)
1950 1970 1995
Age 0-14 143,175 166,367 139,464
Age 15-64 359,162 421,432 487,110
Age 65+ 44,981 68,642 101,338
Age 75+ 14,553 22,762 38,139
Total 547,318 656,441 727,912
Source: European Rural Development (ERD) Project.
What was the age 65+ population of Europe in 1970?
19 The following pie chart represents the results of a survey about whether people in a certain town have cats or dogs as pets.
If there are 500 people in the town, how many people have both cats and dogs?
![931_Pie chart.jpg](https://secure.tutorsglobe.com/CMSImages/931_Pie chart.jpg)
20 These data represent the population of a certain city.
Year Population (in thousands)
1950 18
1960 23
1970 29
1980 32
1990 38
2000 42
(a) Draw a line graph for the data.
(b) Use the line graph to predict the population in the year 2010.