$\"\"$

The equations of linear system are $\"\"$ .

Write each equation in slope - intercept form or $\"\"$ , where m is slope and b is y - intercept.

The equation 1: $\"\"$ is already adjusted in slope - intercept form, where $\"\"$ .

Rewrite the equation 2: $\"\"$ in slope - intercept form.

Add 21x to each side.

$\"\"$

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

Divide each side by 3.

$\"\"$

Cancel common terms.

$\"\"$ .

The slope of $\"\"$ is 7 and its y - intercept is 13.

The two line equations have the same slope and the same y - intercept, so the system has infinitely many solutions. $\"\"$

The linear system has infinitely many solutions.