document.write( "Question 1121609: How would you determine if y=8 a function? \n" ); document.write( "

Algebra.Com's Answer #737564 by MathLover1(20850) $\"\"$ $\"About$

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yes, $\"y=8\"$ $\"is\"$ a function\r
\n" ); document.write( "\n" ); document.write( " $\"y=8\"$ means:\r
\n" ); document.write( "\n" ); document.write( " $\"x\"$ | $\"y\"$
\n" ); document.write( " $\"1\"$ | $\"8\"$
\n" ); document.write( " $\"2\"$ | $\"8\"$
\n" ); document.write( " $\"3\"$ | $\"8\"$
\n" ); document.write( " $\"4\"$ | $\"8\"$
\n" ); document.write( ":
\n" ); document.write( "etc\r
\n" ); document.write( "\n" ); document.write( "so, you are given horizontal line:\r
\n" ); document.write( "\n" ); document.write( " $\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+8%2C8%29+\"$ \r
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\n" ); document.write( "\n" ); document.write( "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 $\"most\"$ $\"+once\"$ . \r
\n" ); document.write( "\n" ); document.write( "here is the $\"vertical\"$ $\"+line\"$ $\"test\"$ \r
\n" ); document.write( "\n" ); document.write( "

\r
\n" ); document.write( "\n" ); document.write( "as you can see, the vertical blue line intersect the graph of $\"y=8\"$ at $\"+one\"$ point\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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