MathDB
Directed Line Segment

Source: 1994 National High School Mathematics League, Exam One, Problem 7

March 2, 2020

Problem Statement

A directed line segment, starting point is P(āˆ’1,1)P(-1,1), finishing point is Q(2,2)Q(2,2). If line l:x+my+m=0l:x+my+m=0 intersects PQPQ at its extended line, then the range value of mm is________.
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