The missing coordinates to complete the sentence are (-1, 0).
Here's a breakdown of the key points:
Horizontal Parabola: The parabola opens to the left and right, rather than up and down.
Vertex at (-1.8, 1.3): The center of the parabola is located at this point in quadrant 2.
Not a Function: The graph fails the vertical line test, meaning there are multiple y-values for a single x-value.
Points with the Same x-Value: The points (-1, 2) and (-1, 0) both have an x-value of -1, but different y-values, confirming it's not a function.
Therefore, the correct answer to fill in the blank is (-1, 0).