document.write( "Question 51598: What is the slope of the line x = -3? \n" ); document.write( "

Algebra.Com's Answer #34413 by rchill(405) $\"\"$ $\"About$

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$\"x=-3\"$ implies that $\"y\"$ can have any value. That implies that the graph is a vertical line going through x=-3. By definition, vertical lines have undefined slopes. That can be proven mathematically using $\"m=%28y2-y2%29%2F%28x2-x1%29\"$ . Because the x value never changes, the denominator becomes 0, and division by 0 is undefined; hence, undefined slope. \n" ); document.write( "

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