document.write( "Question 821644: I am having a really hard time with Algebra. I do not know how to find the slope of a parallel line and the slope of a perpendicular line when the line is -8x-7=1. \n" ); document.write( "
Algebra.Com's Answer #494295 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "given:
\n" ); document.write( "-8x - 7 = 1
\n" ); document.write( "-8x = 8
\n" ); document.write( "x = -1
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\n" ); document.write( "the given line is a vertical line (x = -1)
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\n" ); document.write( "vertical lines have undefined slope
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\n" ); document.write( "however, we can say that all vertical lines are parallel to each other even though their slopes are not defined.
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\n" ); document.write( "we can also say that a line perpendicular to a vertical line must be horizontal.
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\n" ); document.write( "all horizontal lines have slope = 0
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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