rectangle PQRS lies in the xy-coordinate plane so that its sides are NOT parallel to the axes. What is the product of the slopes of all four sides of rectangle PQRS?
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1, the sides are perpendicular, so they have negative reciprocal slopes. so 2 of them would multiply to -1, the other 2 to -1, which multiplied together is positive 1
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hmmm...what an innovative question. and terse too. let's see...
slope(pq and qr) = -1
slope(qr and rs) = -1
slope(rs and sp) = -1
slope(sp and pq)=-1
-1^4 = 1
ans: 1
good luck
slope(pq and qr) = -1
slope(qr and rs) = -1
slope(rs and sp) = -1
slope(sp and pq)=-1
-1^4 = 1
ans: 1
good luck