solving systems of equations , math homework help
Estimate the solution of the system of equations shown in the graph below?
(1, 0) and (-3, 0)
(0, -3) and (0, -1)
(-1, -2)
(-2, -1)
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If a system of equations has exactly one solution, it is ____________________?
consistent and independent
inconsistent and independent
inconsistent and dependent
consistent and dependent
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Which of the following graphs best represents a system of equations that has no solution?
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A student uses the substitution method to solve the system of equations below algebraically.
2x – y = 5
3x + 2y = -3
Which equation could be used?
3x + 2(2x – 5) = -3
3x + 2(5 – 2x) = -3
3(y + 5/2) + 2y = -3
3(5/2 – y) + 2y = -3
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Which linear system has been correctly solved for one of the variables from the following system?
2x – y = -1
2x + y = -7
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Which linear system has the solution (6, 6)?
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A student is using the elimination method to solve the system of equations below. What is the best first step?
3x – y = 5
2x + 3y = 10
Multiply the first equation by 2.
Multiply the second equation by 3.
Multiply the first equation by 3.
Multiply the second equation by 2.
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In which line is a mistake first made when solving the following system of equations by elimination for s?
2r + 7s = 11
r – 9s = -7
| Line 1 | 2r + 7s = 11 2(r – 9s = -7) |
| Line 2 | 2r + 7s = 11 2r – 18s = -14 |
| Line 3 | -11s = -3 |
| Line 4 | s = 11/3 |
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Find the solution to the system of equations.
4c = 3d + 3
c = d – 1
c = 6, d = 7
c = 3, d = 4
c = 8, d = 7
c = 5, d = 4
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What is the solution to the system of equations.
2x – 3y = -9
-x + 3y = 6
(3, 3)
(-3, 1)
(-3, 3)
(1, -3)
