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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.
What else can I help you with?
Is the relation a function?
Not every relation is a function. But every function is a relation. Function is just a part of relation.
When does a relation be a function?
A function is a relation whose mapping is a bijection.
How does you know that relation is a function?
One way is to try the vertical line test on a graph!
A relation is a special type of function?
No. A relation is not a special type of function.
What is the difference between function and a relation?
Good question. A relation is simply that; any x-value to create any y-value. A function, however, cannot be defined for multiple values of x. In other words, for a relation to be a function, it must have singular values for all x within its domain.
Relation is a function y equals -8?
determine whether each relation is a function y equals -8
What are two ways to determine whether a relation is a function?
Two ways to determine whether the relation is a function is use a mapping diagram or use a vertical line test.
How do you know if a relation is a function?
relation and function are number that combine with number and neqative number to .
Is the relation a function?
Not every relation is a function. But every function is a relation. Function is just a part of relation.
Find the domain and range of the relation and state whether or not the relation is a function 1 4 1 5 1 6 1 7?
Any answers?
Can you have a function that is not a relation?
No, a function must be a relation although a relation need not be a functions.
Which of these data sets represents a function?
Does the graph above show a relation, a function, both a relation and a function, or neither a relation nor a function?
Is all relation a function?
Not every relation is a function. A function is type of relation in which every element of its domain maps to only one element in the range. However, every function is a relation.
When does a relation be a function?
A function is a relation whose mapping is a bijection.
Is a function always a relation and a relation always a function?
yes.
How does you know that relation is a function?
One way is to try the vertical line test on a graph!
How to know whether the function is user define function or library function?
You don't have to know. Library functions are also written by somebody, aren't they?
