Asked by Skyboy
A point A(4, k) and B(2, 4) subtend a right angle at the origin of the coordinate axes. Find the value of k.
Answers
Answered by
Reiny
their slopes would have to be negative reciprocals
slope OB = 4/2 = 2
so lope of AO = -1/2 and if A is (4,k)
A must be (4,-2)
slope OB = 4/2 = 2
so lope of AO = -1/2 and if A is (4,k)
A must be (4,-2)
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