Question 142489
Put the line into the form y = mx + b

{{{-x + y = 12}}}
{{{y = x + 12}}}

Now it is in the form y = mx + b.

So what is m?

{{{m=1}}} . The slope of this line is 1.

The slope of any line parallel to this line is also 1, since parallel lines have the same slope.