If x and y vary directly, and x = 12 when y = 3, what will be the value of x when y = 9?

If x and y vary directly, and x = 12 when y = 3, what will be the valu

1.	If x and y vary directly, and x = 12 when y = 3, what will be the value of x when y = 9?
Answer» If x and y vary directly, and x = 12 when y = 3, then the value of x when y = 9, is equal to36. Direct proportion isthe relationship between two variables whose ratioisequal to a constant value.