Final answer:
To plot the points A(-6, 4), B(-1, 1), and C(3, 1), we locate each point on the grid using their x and y coordinates. The angle ABC is a right angle.
Step-by-step explanation:
To plot the points A(-6, 4), B(-1, 1), and C(3, 1) in a coordinate plane, we locate each point on the grid using their x and y coordinates. A is located 6 units to the left and 4 units up from the origin, B is located 1 unit to the left and 1 unit down, and C is located 3 units to the right and 1 unit down. The angle ABC can be determined by calculating the slopes between the points. In this case, the angle ABC is a right angle, so the answer is d. Right angle.