Three vertices of a parallelogram, taken in order, are (-1, -6), (2,-5) and (7,2). Write the coordinates of its fourth vertex.

Explanation

To find the coordinates of the fourth vertex of the parallelogram given three vertices A(-1, -6), B(2, -5), and C(7, 2), we can use the property that the diagonals of a parallelogram bisect each other. This means that the midpoint of diagonal AC will be equal to the midpoint of diagonal BD, where D is the fourth vertex we need to find.

### Step-by-Step Solution:

1. **Identify the Given Points:**
- Let the vertices be:
- A = (-1, -6)
- B = (2, -5)
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