5) A (1; 4), B (5;-3), C (-1; 2)

Here's how to plot the given points:

• Point A (1; 4): Start at the origin. Move 1 unit right on the x-axis and 4 units up on the y-axis.
• Point B (5; -3): From the origin, move 5 units right on the x-axis and 3 units down on the y-axis.
• Point C (-1; 2): From the origin, move 1 unit left on the x-axis and 2 units up on the y-axis.

You can now locate these points on the provided graph.