No.
A value that is unknown may not be a variable but simply a constant whose value needs to be calculated.
Solution
an solution
The value of the variable that makes an equation true is known as the "solution" to the equation. For example, if you have the equation (x + 3 = 7), the solution is (x = 4), since substituting 4 into the equation yields a true statement. In general, finding the value of the variable involves manipulating the equation to isolate the variable on one side.
a "solution"
A value of the variable that makes the equation statement true is called a solution. For example, in the equation ( x + 2 = 5 ), the value ( x = 3 ) is a solution because substituting it into the equation yields a true statement. There can be multiple solutions or none, depending on the equation. To find a solution, you can isolate the variable and solve for its value.
True.
True
Yes, passing a variable by reference gives you a pointer to the original variable, meaning you can change its value from within the function being called and the change will affect the original variable.
If it does not change it isn't variable. The converse is also true.
It's the value that when substituted in for the variable, makes the equation true. Ex: x + 1 = 3 The value 2, when substituted for the variable x, makes the equation true.
linear equation in one variable
Maybe your speaking a variable that contains a ternary operators such as:
A function assigns each value of the depend variable to more than one value of the inde variable is this true or false
A variable does and must change, but you can only have one variable, otherwise the experiment becomes biased and unfair
Solution
an solution
You substitute the value of the variable into the equation and simplify. If the rsult is a true statement then that value of the variable really does satisfy the equation.