Is X always the independent variable
not at all.
x(t)=3t+5
You have to write the function using the independent variable as the parameter. In this case, t is the independent variable.
However, referring to your previous posts, if you are using x and y, yes, x is usually the independent variable.
Try reading your text. It must explain this.
No, X is not always the independent variable. In the context of mathematical equations or functions, the independent variable is the one that you can freely change or manipulate, and the dependent variable is the one that changes as a result. In many cases, X is used to represent the independent variable, but it can be any variable.
To determine which variable is the independent variable, you need to understand the context of the problem or equation you are working with. For example, consider a simple equation: area = length * width. In this case, you can choose the values of length and width, so they are the independent variables, while area depends on those values and is the dependent variable.
It's important to analyze the question or problem statement to identify the variables involved and their relationships to determine which one is the independent variable.