Respuesta :
					                   (y-4) = 7x - 21
y-7x = -21 + 4
y-7x = -17
7x-y-17 = 0 is the equation.
I'm not sure if this is totally correct.
					                
					             y-7x = -21 + 4
y-7x = -17
7x-y-17 = 0 is the equation.
I'm not sure if this is totally correct.
 
					                  