Desmos.

1. Type the equation or function you are working with.

2. Read the graph, the table, or the solution Desmos shows.

3. Compare with your own work before you trust it.

TI-84.

1. Press Y= and enter the left and right sides as Y1 and Y2.

2. Press GRAPH to see both sides.

3. Use 2nd TRACE, then intersect or value, to read the key point.