for fine and equation line parallel you need to know the equation line
we can say the line is parallel when the equations of the lines have the same slope so the slope of the equation shown in the question is m=(-3/2) so the equation that we will obtain most have a slope equal to (-3/2)
Using the equation line and the point c we can obtain
(y-(-2))=(-3/2)(x-6)
y+4=(-3/2)x+9
y=(-3/2)x+9-4
Finally, the equation line parallel to y=(-3/2)x+6 is
y=(-3/2)x+5