Question

A system of equations is graphed on a coordinate plane.

Which coordinates are the best estimate of the solution to the system of equations?

(−1, 0)

(−1, −1)

​ (1, 0) ​

​ (1, −1)

Answer 1

The answer is (-1, 0). I just did the test on K12.

Answer 2

The solution can be found where two lines intersect. The lines in the image do not intersect at an exact point, so we will need to estimate.
The x value is either 1 or -1 from your choices. You can see it is closer to -1 on the horizontal (x axis).
The y value is either 0 or -1 from your choices. You can see it is closer to 0 on the vertical (y axis).
The answer to your set of lines is approximately (-1,0).