Question 1052524
Calculate the slope of each line, then compare.
{{{m=(y[2]-y[1])/(x[2]-x[1])}}}
{{{m[1]=(-3-4)/(-2-(-7))}}}
{{{m[2]=(-17-(-10))/(10-5)}}}
If they are the same, the lines are parallel.
{{{m[1]=m[2]}}}
If they are negative reciprocals, the lines are perpendicular.
{{{m[1]*m[2]=-1}}}
Else, they are neither.