Please let me know if answers are correct

3. If (3, 6) lies on the boundary of the inequality y > f(x), the point that must be a solution to the inequality is A. (0, 6) B. (3, 3) C. (3, 9) D. (6, 6) 4. The boundary of a linear inequality is 3x + 2y = 12. The coordinates (2, 3) satisfies the inequality, so A. a dashed line will represent the boundary, but the solution region is unknown @. a solid line will represent the boundary, but the solution region is unknown C. the boundary line type is unknown, but the solution region is above the boundary D. the boundary line type is unknown, but the solution region is below the boundary