SOLUTION: How would you determine if y=8 a function?

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Question 1121609: How would you determine if y=8 a function?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
yes, y=8 is a function
y=8 means:
x|y
1|8
2|8
3|8
4|8
:
etc
so, you are given horizontal line:
+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+8%2C8%29+

since you are given a straight horizontal line, use this way of determining if an equation is using the vertical+line test. In mathematics, the vertical line test is a test to determine if a relation or its graph is a function or not. For a relation or graph to be a function, it can have at most a single y-value for each x-value. Thus, a vertical line drawn at any x-position on the graph of a function will intersect the graph at most+once.
here is the vertical+line test

as you can see, the vertical blue line intersect the graph of y=8 at +one point