'y' is a variable. '15' is not. [ y+15 ] is an expression in one variable.
the variable is Y
A variable is a number that isn't fixed, it can be anything. So in this situation x and y are the variables.
The y variable! It may be one of the dependent variables.
POSITIVE
As it is written, x is the independent variable and y is the dependent. But you could re-write it as x = y/23 + 30/23 and then y is the independent variable and x the dependent.
The variables are x and y
It is not possible to solve one linear equation in two variables for either of the variables.
It is x and y that are the unknown variables
The variables are x and y.
If there is one independent variable, and one or more dependent variables, then they would be plotted on the y-axis. If there are a mix of discrete and continuous variables, then the continuous variables should be plotted on the y-axis. In general, though, any variable can be plotted on the y-axis.
Dependent variables and independent variables refer to values that change in relationship to each other. The dependent variables are those that are observed to change in response to the independent variables. The independent variables are those that are deliberately manipulated to invoke a change in the dependent variables. In short, "if x is given, then y occurs", where x represents the independent variables and y represents the dependent variables. Depending on the context, independent variables are also known as predictor variables, regressors, controlled variables, manipulated variables, explanatory variables, or input variables. The dependent variable is also known as the response variable, the regressand, the measured variable, the responding variable, the explained variable, the outcome variable, the experimental variable or the output variable. This answer was coppied onto this page by tom hills of falmouth waii