http://i89.photobucket.com/albums/k202/lanez3/alg1_chap_11_pract_test_graphs-2.jpg
(graph)
1: A system of linear equations consists of two or more ________.
expressions
linear equations
linear expressions
2: A solution of a system of linear equations is a/an __________ that is a solution of both equations in the system.
line
equation
ordered pair
3: A system of parallel lines will have __________ solution(s).
an infinite number of
no
one
4: Which of the figures is the graph of the system
-4x + 2y = 8
2x - y = 0 ?
Figure A
Figure B
Figure C
5: What is the solution to the system given in Question #4?
(0, 4)
infinite number of solutions
no solution
6: Which of the figures is the graph of the system
x + y = 3
2x - y = 0 ?
Figure D
Figure C
Figure B
7: What is the solution to the system given in Question #6?
(1, 4)
(1, 1)
(1, 2)
8: Which of the figures is the graph of the system
-x + 2y = 5
2x + 3y = -3 ?
Figure B
Figure A
Figure D
9: What is the solution to the system given in Question #8?
(-3, 1)
(2, 3)
(-17/18, 1)
10: Which of the figures is the graph of the system
2x - 4y = -10
-x + 2y = 5 ?
Figure A
Figure B
Figure C
11: What is the solution to the system given in Question #10?
(0, 3)
(2, -1)
There are an infinite number of solutions.
12: Solve the following systems by substitution or elimination.
3x - 2y = 8
2x + 5y = -1
(2, -1)
(2, -3)
(-3, -1)
13:
5x - 2y = 12
2x + 3y = 1
(1, 4)
(1, 2)
(2, -1)
14:
2x - y = 4
6x - 3y = -18
(2, -3)
infinite number of solutions
no solution
15:
3x + 2y = -2
2x - y = -6
(-2, 2)
(2, -1)
no solution
16:
3x - y = 2
x + 2y = 10
(-2, 2)
(2, -3)
(2, 4)
17:
x + 2y = 4
2x + 4y = -8
(2, -1)
(2, 4)
no solution
18:
y = 2x - 3
x + 2y = 14
(4, 5)
(2, 4)
no solution
19:
2x + y = 6
x - y = -3
(1, 1)
(1, 4)
(2, 4)
20:
3x - 2y = 12
7x + 2y = 8
(2, -3)
(2, 4)
(-3, 1)
21:
2x - y = 10
x - 2y = -4
(2, -2)
(8, -2)
(8, 6)
22:
9x - 3y = 24
11x + 2y = 1
(4, 5)
(1, -5)
no solution
23:
2x - 3y = -2
-4x + 6y = 7
(2, -1)
(2, -3)
no solution
24:
3x + 8y = 4
15x + 10y = -10
(-4/3, 1)
(1, 4)
(1, 3/4)
25:
-6x + 10y = -30
3x - 5y = 15
(2, -3)
no solution
infinite number of solutions
2007-05-22 22:29:11 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You mailed me this question through a Yahoo! Groups message and I answered it. Why do you waste 5 points? Anyway, I'll answer this again here:
Answer 1:
linear equations
Answer 2:
ordered pair
Answer 3:
No solution
Answer 4:
Figure B
Answer 5:
no solution
Answer 6:
Figure D
Answer 7:
(1,2)
Answer 8:
Figure A
Answer 9:
(-3, 1)
Answer 10:
Figure C
Answer 11:
Infinite solutions
Answer 12:
(2, -1)
Answer 13:
(2, -1)
Answer 14:
No solution
Answer 15:
(-2, 2)
Answer 16:
(2, 4)
Answer 17:
no solution
Answer 18:
(4, 5)
Answer 19:
(1, 4)
Answer 20:
(2, -3)
Answer 21:
(8, 6)
Answer 22:
(1, -5)
Answer 23:
No solution
Answer 24:
(-4/3, 1)
Answer 25:
Infinite solutions
2007-05-22 22:34:04 · answer #1 · answered by Akilesh - Internet Undertaker 7 · 1⤊ 1⤋
1. Linear expressions
2. Ordered pair
3. No solution
4. Figure B, the equations represent parallel lines
5. No solution
6. Figure D
7. x + y = 3
2x - y = 0
=> 3x = 3 => x = 1
So, answer is (1,2) by substitution.
8. Figure A
9. (-x + 2y = 5)2
2x + 3y = -3
=> 7y = 7 => y = 1.
So, (x, y) = (-3, 1)
10. Figure c
11. No solution, lines are parallel.
12. (38/11, 13, 11)
13. (2, -1)
14. No solution
15. 3x + 2y = -2
(2x - y = -6)2
=> 7x = -14 => x = -2
sol is (-2,3)
16. (3x - y = 2)
x + 2y = 10
Sol (2,4)
17.
(x + 2y = 4)(-2)
2x + 4y = -8
no solution
18:
y = 2x - 3
x + 2y = 14
=> x + 2(2x-3) = 14
=> 5x = 20 => x = 4
Sol is (4, 5)
19:
2x + y = 6
x - y = -3
=> 3x = 3 => x = 1 & y = 4
20.
3x - 2y = 12
7x + 2y = 8
By addiing the 2 equations, 10x = 20
=> x = 2
21:
2x - y = 10
x - 2y = -4
sol (8,6)
22:
9x - 3y = 24
11x + 2y = 1
(1, -5)
23:
2x - 3y = -2
-4x + 6y = 7
No solution
24:
3x + 8y = 4
15x + 10y = -10
(-4/3, 1)
25:
-6x + 10y = -30
3x - 5y = 15
no solution
2007-05-23 00:09:06 · answer #2 · answered by me_poori 2 · 2⤊ 0⤋
it extremely is been a on an identical time as because of the fact that i've got completed this. Their might desire to be a graph or y= button on the precise of your calculator ,press that, then purely put in the factors. i think of that type might also have a draw button on it. stable success.
2016-11-05 02:27:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
no idea! Sorry : [
2007-05-22 22:32:40 · answer #4 · answered by Anonymous · 1⤊ 0⤋
wtf is this a maths test?!
2007-05-22 22:33:36 · answer #5 · answered by Anonymous · 0⤊ 1⤋