5. Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?
A) (3, 1) and (–4, 0) C) (0, –4), (–4, 0), and (–3, –7)
B) (0, –4) and (–3, –7) D) (–4, 0) and (–3, –7)
6. An employee who produces x units per hour earns an hourly wage of y = 0.35x + 11 (in dollars). Find the hourly wage for an employee who produces 2 units per hour.
A) $11.40 B) $12.10 C) $12.20 D) $11.70
9. Find the slope of the line passing through the points (4, 0) and (4, 5).
A) Undefined B) 0 C) 1 D) 5
13. Find the slope of the line passing through the points (–9, –4) and (0, –4).
A) Undefined B) 0 C) 1 D) 9
20. Find the slope of the line passing through the points (–7, –4) and (–1, –10).
21. Graph using the intercept method: 5x – y = 5.
22. Graph using the intercept method: x + 3y = 6.
23. These data represent the population of a certain geographic region.
Year Population (in millions)
1950 34
1960 38
1970 43
1980 47
1990 50
2000 55
(a) Draw a line graph for the data.
(b) Use the line graph to predict the population in the year 2010.
24. Graph y = 3x.