m refers to slope,therefore slope of this line is 2
we need to find the equation of some line which is parallel to this
so the line we need will also have slope 2

Now our line has slope 2 and passes through point(-3,5)
using straight-line equation of slope-and-point form we get

where m is slope,and (a,b) is the point it passes through

Hope this helps,
Prabhat