$\"\"$

The system of equations are,

$\"\"$ ------------(1)

$\"\"$ ---------(2)

Solve the first equation for x since the coefficient is 1.

$\"\"$

Subtract y from each side.

$\"\"$

$\"\"$ $\"\"$

The value of $\"\"$ substitute in the second equation $\"\"$ to find y.

$\"\"$

This is an identity, so there are an infinite number of solutions. $\"\"$

Check the solution by graphing.

Draw a coordinate planes.

$\"graph$

We can observe above graph,

The two lines are coin side with each other, these are an identities.

So the system has an infinite number of solutions. $\"\"$

The system of equations has an infinite number of solutions.