Find the endpoint when given midpoint and other endpoint ex 1

The video tutorial explains the importance of plotting points when solving problems involving midpoints and endpoints. It demonstrates how to use the midpoint formula to find an unknown endpoint when given a midpoint and one endpoint. The instructor emphasizes the use of algebraic operations to solve for unknown coordinates and verifies the solution by plotting the points on a graph.

Describe the steps taken to solve for the unknown endpoint in the example provided.

How do you verify that the calculated endpoint makes sense in relation to the graph?