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What does the second power mean in math?
It is the square: the variable multiplied by itself.
What is the definition of quadratic eqau tion?
An equation where some variable is raised to the second power.
How do you know whether a relation is a function?
Use the definition of a function. If, for any value of one variable, there is only a single possible value of the second variable, then the second variable is a function of the first variable. The second variable is often called the "dependent variable". If you can solve an equation explicitly for the dependent variable, then it is a function. If you can NOT solve it for a variable, it may or may not be a function - it turns out that some equations are hard or impossible to solve explicitly for one of the variables.
Why are linear equations also called first-degree equation?
Equations can be classified according to the highest power of the variable. Since the highest power of the variable in a linear equation is one, it is also called a first-order equation.
What is it called when raising a number to the second power?
Taking a number to the second power is known as "squaring" the number.
