document.write( "Question 174110This question is from textbook Basic Algebra
\n" ); document.write( ": how do you write equations in slope-intercept form and then how can you tell if each pair of lines is parallel, perpendicular, or neither? \r
\n" ); document.write( "\n" ); document.write( "y = -4x + 1 and y = -4x - 5 \n" ); document.write( "

Algebra.Com's Answer #128989 by Mathtut(3670) $\"\"$ $\"About$

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they are already in slope intercept form y=mx+b where m is the slope
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\n" ); document.write( "these have the same slope of -4 so they are parallel lines
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\n" ); document.write( "to be perpendicular the slopes must be negative inverses of each other such as
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\n" ); document.write( "4 and -1/4 or 6 and -1/6 \n" ); document.write( "

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