Iwant to know if it’s community property of multiplication or associated property of addition

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?