$\"\"$

The equation is $\"\"$ and the point is $\"\"$ .

$\"\"$ (Write original eqation)

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Subtract: $\"\"$ )

$\"\"$ (Take square each side)

This is true, so the point $\"\"$ is a solution of the equation $\"\"$ .

Since the point $\"\"$ is lie on the graph of $\"\"$ . $\"\"$

The point $\"\"$ is lie on the graph of $\"\"$ .