document.write( "Question 80716: How do I write the equation of the line passing through (3,10) and (3,-3) \n" ); document.write( "

Algebra.Com's Answer #57876 by Earlsdon(6294) $\"\"$ $\"About$

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You can start with the slope-intercept form of a linear equationL $\"y+=+mx%2Bb\"$ where: m is the slope and b is the y-intercept.
\n" ); document.write( "First find the slope of the line passing through the two given points (3, 10) and (3, -3):
\n" ); document.write( " $\"m+=+%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"$ Making the appropriate substitutions:
\n" ); document.write( " $\"m+=+%28-3-10%29%2F%283-3%29\"$
\n" ); document.write( " $\"m+=+-13%2F0\"$ This is undefined so the slope is undefined which means that the line is a vertical line.
\n" ); document.write( "The equation of this vertical is therefore:
\n" ); document.write( " $\"x+=+3\"$
\n" ); document.write( " \n" ); document.write( "

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