Question 368346
Convert to slope-intercept form, {{{y=mx+b}}}
Parallel lines have identical slopes, so if the lines are parallel then,
{{{m[1]=m[2]}}}
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1.{{{   y = x + 8}}}
{{{m[1]=1}}}
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{{{-2x + 12y = -11}}}
{{{12y=2x-11}}}
{{{y=(1/6)x-11/12}}}
{{{m[2]=1/6}}}
Clearly, these lines are not parallel.
Solve the second pair in the same way.