Question 674135
{{{-5/4}}}x = 4
x = {{{4(-4/5)}}}
x = {{{-16/5}}}
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the line is a vertical line through the x axis at {{{-16/5}}}
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a parallel line will have the same slope, which is undefined.  
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the equation for the parallel line will be {{{highlight_green(x=7)}}}, which is another vertical line, but one through the x axis at 7.

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