Question 918976
<pre>
The coefficient of x is the slope

Parallel lines slope the same way.
That is, they have the same slope

The coefficient of x in {{{y=expr(3/7)x-12}}} is {{{3/7}}}.

Therefore the slope of {{{y=expr(3/7)x-12}}} is {{{3/7}}}. 

The coefficient of x in {{{y=mx+8}}} is {{{m}}}. 

Therefore the slope of {{{y=mx+8}}} is {{{m}}}.

{{{y=mx+8}}} is the equation of a line parallel to the line {{{y=expr(3/7)x-12}}}.

Therefore {{{m}}} must be the same as {{{3/7}}}

Answer {{{m=3/7}}}

Result:

{{{y=expr(3/7)x+8}}} is the equation of a line parallel to the line {{{y=expr(3/7)x-12}}}.

Edwin</pre>