Independent variable is a variable in an equation, whose values make up the domain.
In other words, an independent variable in an equation may have its value freely chosen regardless the values of any other variable.
In the equation y = 7x + 5, the independent variable is x. The variable y is not independent, because it depends on the value chosen for x
A. f(x)
B. 3/2
C. x
D. no independent variable
Correct Answer: C
Step 1: Independent variable is a variable in an equation, whose values make up the domain.
Step 2: So, the independent variable in the given equation is x.