Posted by **Melissa** on Saturday, November 13, 2010 at 4:26pm.

3x-9y=63

2x-6y=-18

Solve system of equations by graphing then classify as Independent on dependent and consistent or inconsistent?

- Algebra -
**Reiny**, Saturday, November 13, 2010 at 4:50pm
Without any work, I can see that each line has a slope of 1/3.

So you will have two parallel lines, which of course will not meet.

So what classification would the system fall under?

- Algebra -
**Melissa**, Saturday, November 13, 2010 at 5:21pm
Consistent and independent?

- Algebra -
**Reiny**, Saturday, November 13, 2010 at 5:36pm
Yes, they are independent, because one equation cannot be derived from the other.

But they are inconsistent, since there is no solution.

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