18. Given A = (3, 1) and B = (0, y - 1). Find y
if AB = 5.
Answers
Answered by
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Answer:y=(6,2)
Step-by-step explanation:
AB=5
AB^2=25
(0-3)^2+(y-1-1)^2=25
9+y^2+4-4y=25
y2-4y-12=0
y(y-6)+2(y-6)=0
(y-6)(y+2)=0
y=(6,-2)
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