Which letters shown below on the number line also have their opposites labeled?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Darian wants to build a regulation size pool table that is 9 feet in length. he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

9/10 divide by -3/15 as a mixed number