Download Practice 3-1 Classify each system without graphing. (Independent

3.1 -3.2 Form C & Misc. Graphs
Practice 3-1
Classify each system without graphing. (Independent, Dependent, Inconsistent)
x + y = 3
2 x + y = 3
1. 
________________ 2. 
____________
 y = 2x − 3
 y = −2 x − 1
x + 3y = 9
3. 
____________
−2 x − 6 y = −18
 x + y = 11
4. 
____________
y = x − 5
6.
x + y = 4
5. 
____________
 y = 2x + 1
x + 3y = 9

9 y + 3 x = 27
____________
Practice 3-2
Solve each system by graphing, substitution or elimination. (Show your work.)
Show your work. If you solve by graphing please make a sketch in the box.
7.
y = x − 2
__________

 x + y = 10
1

 y = 2 x + 3
10. 
__________
1
y = − x − 3

4
8.
 y = −3 x

x + y = 2
11.
x + y = 6

x − y = 4
__________
__________
 x − 2 y = 10
9. 
 y = x − 11
12.
 y = −3 x

x + y = 2
__________
__________
 x + y = 10
___________
x − y = 2
13. 
3 x − y = 17
 y + 2x = 8
16. 
6 x − 3 y = −33
 2 x + y = −1
19. 
 x + 2 y = 10
________
3 x − y = 9
15. 
2 x − 5 y = 11
_________
4 x + 10 y = 18
2 x − y = 7
3 x − 2 y = 10
18. 
14. 
17. 
___________
 4 x + 3 y = −6
__________
5 x − 6 y = −27
20. 
__________
2 y − 3x = 4
____________
 x = −4
__________
2 y = −4 x
__________
4 x + 2 y = −11
21. 
Solve and graph the following.
22. 78 > -4x - 3x – 6
Ans: ________
23. -4(-7x + 10) = -68
Ans: ________
24. 2(4x + 3)
<
Ans: ________
-26
25. -3(-4x + 2) > 45
Ans: ________