3x+y=9 has slope -3. A line in the plane and parallel to the given equation's line also has slope -3. To also pass through a point (4,-7), the equation for this line is y%2B7=-3%28x-4%29, in the point-slope form.
Step-by-step explanation:
i hope this helps P. S Im still a Elementary hindi ko po alam lahat sorry
