If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.
If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.
If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.
If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.
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If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.
a+b=16 is a linear equation in two variables. The variables are a and b. To solve a linear equation in 2 variables we need more information. We need either another equation, or a value to put in for a or b.Since we have neither, there is no more we can do.
The answer is every point on the line in the Cartesian plane which is defined by the equation. You have one linear equation in two unknown variables. In order to solve for two variables you need two independent linear equations.
A function of one variable is of the form y=f(x) where all you need to know in order to get values for y is the value of the independent variable, x. A function of two variables is of the form z=f(x,y) where you need to know the values of both x and y to get a value for z. A linear equation is simply and algebraic equation where all variables, regardless of how many there are, are raised to the power of one.
You cannot solve one linear equation in two unknown variables (x and y), although some non-linear equations will suffice. You need two independent linear equations. All you can do is express one of the variables in terms of the other, but that is not solving the equation.
The domain. It need not be the "independent variable" since the variables could be interdependent.