Which of the following are useful ways of finding the value of a variable? Check all that apply

A. Writing an equation

B. Drawing a graph

C. Reading a table

D. Drawing a diagram

Drawing a graph as it shows the change in variables.

Writing an equation and Drawing a graph are two ways or useful ways of finding the value of the variable. These two are the basic ways of solving the given variable equation. In mathematical ways, this is the most useful ways.