## Needsomehelpplz 3 years ago Determine if the given relation is also a function? {(7,-6),(-1,6),(8,-2),(0,4)}

1. baldymcgee6

What is the common "function test" we can use to check?

2. Needsomehelpplz

Idk, Functions are seriously throwing me for a loop right now.

3. baldymcgee6

Well, we can use something called the vertical line test... Have you heard of this?

4. Needsomehelpplz

I've heard of it but I can't recall exactly what it is.

5. baldymcgee6

Well, if you plot those points on a graph, then move a vertical line across the graph.. If the vertical line touches more than one point at any given time, it is NOT a function.

6. Needsomehelpplz

Okay so it is a function.

7. Needsomehelpplz

?

8. baldymcgee6

That is correct

9. Needsomehelpplz

Thank You

10. calculusfunctions

A function is an association between two or more variables, such that for each and every value of the independent variables, there exists exactly one value of the dependent variable, in a specified set called the domain of the function. A function with a single independent variable, is called a single variable function. A relation is a set of ordered pairs (x, y), in a single variable relation where the x is the independent variable in a set called the domain, and y is the dependent variable in a set called the range. In order for a relation to be a function of a single independent variable, for every x there must be one and only one y. @Needsomehelpplz