$\"\"$

(a)

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

To check the solution, substitute the values of $\"\"$ in the original equation.

$\"\"$

$\"\"$ .

Since the above statement is false, the point $\"\"$ is not a solution of the equation $\"\"$ , and

The point $\"\"$ does not lies on the graph of $\"\"$ . $\"\"$

(b)

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

To check the solution, substitute the values of $\"\"$ in the original equation.

$\"\"$

$\"\"$ .

Since the above statement is true, the point $\"\"$ is a solution of the equation $\"\"$ and

The point $\"\"$ lies on the graph of $\"\"$ . $\"\"$

(a) The point $\"\"$ does not lies on the graph of $\"\"$ .

(b) The point $\"\"$ lies on the graph of $\"\"$ .