$\"\"$

The equation of hyperbola is $\"\"$ .

Convert the equation of hyperbola into standard form by completing the squares.

$\"\"$

Therefore, degenerate hyperbola is a two intersecting lines.

$\"\"$ and $\"\"$ .

$\"\"$

Graph:

Graph the lines $\"\"$ and $\"\"$ .

$\"\"$

$\"\"$ and $\"\"$ .

Graph of the intersecting lines $\"\"$ and $\"\"$ :

$\"\"$ .