## Algebra: A Combined Approach (4th Edition)

$10x - 5y = 0$ $10x - 5y = 1$ $10x - 5y = 2$
$10x - 5y = 0$ $10x - 5y = 1$ $10x - 5y = 2$ They are parallel since they all have the same slope computed as $m=-\frac{10}{-5}=2$