Hello:
an equation for the line is : y =mx +b (m: is a slope )
parallel to the line 4y+28x=20 or y+7x=5 or the form y = -7x+5 ( same slope m = -7)
the equation is : y =-7x+b
through the point (-9,3) : 3 =-7(-9)+b....... b=-60
the equation is : y = -7x -60