3x-2y=-1.

Y=-x+3.

Is (1,2) a solution do the system?

Yes

Step-by-step explanation:

To figure out if (1,2) is a solution to the system, we can plug the values in and see if it is true.

3x-2y=-1

3 (1) - 2 (2) = -1

3-4=-1

-1=-1

It is true for this equation. Now let's check the next one.

y=-x+3

2 = - (1) + 3

2=2

Since both equations are true when we plug the values in, (1,2) is a solution to the system.

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