SOLUTION: Hi, i need help please! 1. x+y=10 2x-y=5 2. 3x-2y=5 4x-5y=-5 3. 3x-9y=1 6x-8y=2 4. 4x-y=8 2x+y=6 5. 12x+4y=8 3x+y=6 Which of these equations is

Question 437721: Hi, i need help please!
1. x+y=10
2x-y=5
2. 3x-2y=5
4x-5y=-5
3. 3x-9y=1
6x-8y=2
4. 4x-y=8
2x+y=6
5. 12x+4y=8
3x+y=6
Which of these equations is independent, dependent or
consistent? please help explain. Thanks

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!

Which of these pairs of equations is independent, dependent or
consistent? please help explain.
-------------------------------------------------
Put each equation in slope-intercept form.
Note the slope and intercept of each equation.
---
If you have a pair of equations with the
same slope and same intercept the equations are dependent.
---
If you have a pair of equations with the
same slope and different intercepts the equations are inconsistent.
----
If you have a pair of equations with different slopes
the equations are consistent and independent.
======================
Cheers,
Stan H.
=============
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