1. The problem states that a triangle is drawn with vertices A(5, 1), B(7, 6), and C(1, 3). 2. The graph shows point A plotted at (5, 5) instead of (5, 1). 3. Points B(7, 6) and C(1, 3) are plotted correctly. 4. The error is that the y-coordinate of point A was incorrectly plotted as 5 instead of 1. 5. This means the coordinates for point A were reversed or misread when plotting. 6. To correct the error, point A should be plotted at (5, 1) on the coordinate plane. 7. This correction ensures the triangle is accurately represented with vertices A(5, 1), B(7, 6), and C(1, 3).