unit 6 graphing practice test
16. Graph the line containing ( —3, 1) and (5, 4) and find the slope.
15. Find the slope.
1200 1000 800 600 400 200
Number of lung transplants
(12, 956)
29. Lung Transplants. The number of lung transplants in the United States has increased in recent years. The line graph at right describes the increase in the number of lung transplants for years since 1988.
Find an equation of the line.
What is the rate of change in the number of lung transplants with respect to time?
Use the equation to determine the number of lung transplants in 2005.
(1988)
0 2 4 6 8 10 12
(2000)
Determine whether the graphs of the equations are parallel, perpendicular, or neither.
30. 2x + y = 8, 31. 2x + 5y = 2,
2x + y = 4 y = 2.x + 4
32. x + 2y = 8,
—2x+y=8
(2, 203)
17. Navigation. Capital Rapids drops 54 ft vertically over a horizontal distance of 1080 ft. What is the slope of the rapids?
18. Find the slope, if it exists.
2x — 5y = 10
x = —2
19. Draw a graph of the line with slope —1 and y-intercept
(0, 1).
5
4
3
2
1
-5-4-3-2-11
1 1 2 3 4 5 x
-2
-3
-4
-5
20. Graph y = 2x — 3 using the slope and the y-intercept.
5
4
3
2
1 2 3 4 5 x
5 4 3 2 1
1
–2
—3
–5
Find the slope and the y-intercept.
21. y = 2x — 22. —4x + 3y = —6
Find an equation of the line with the given slope and y-intercept.
23. Slope = 1.8; y-intercept: (0, —7) 24. Slope = —;11; y-intercept: (0, —’-g)
Find an equation of the line containing the given point and with the given slope.
25. (3, 5), m = 1 26. (-2,0), m = —3
Find an equation of the line containing the given pair of points.
27. (1,1) and (2, —2) 28. (4,-1) and (-4, —3)
301
Test: Chapter 3
y A
5
4
3
2
1
-5-4-3-2-11 1 2 3 4 5 x
-2
-3
–4
-5
Colwriaht 8 2007 Pearson Education, Inc.
Years since 1988
Source: National Organ Procurement and Transplantation Network
302
CHAPTER 3: Graphs of Linear Equations
