document.write( "Question 110704: Write the equation of the line with x-intercept (–8, 0) and undefined slope. \n" ); document.write( "

Algebra.Com's Answer #80673 by solver91311(24713) $\"\"$ $\"About$

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A line with an undefined slope is a vertical line, i.e. parallel to the y-axis. All of the points on a vertical line passing through the point (-8,0) must have an x coordinate of -8, so the equation x = -8 completely describes this line.
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\n" ); document.write( "The slope of a line given any two points on the line is given by $\"m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"$ , but for the line x = -8, the x coordinates of any two points on the line are equal, namely -8. Therefore, the denominator of the expression for the slope is zero, so the slope is undefined. \n" ); document.write( "

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