Line which will be parallel to y=2x+7 has the same slope
y=mx+b
where m is slope here m=2 so other line which is parallel to this line also have the m=2
now slope point form of a line is
y-y1=m(x-x1)
where x1,y1 are coordinate points given (4,12)
y- 12=2(x-4)
y-12=2x-8
y=2x+4