Question 1098412
point slope formula y-y1=m(x-x1), m slope, (x1, y1) point
parallel is y+1=-1(x+7), watch the signs carefully
y+1=-x-7
y=-x-8
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perpendicular has negative reciprocal of slope, which would be +1
y+1=(x+7)
y=x+6
{{{graph(300,300,-10,10,-10,10,-x+7,-x-8,x+6)}}}