Question

Given A= (3,1) and B = (0,y - 1) find y if AB = 10

Answer 1

Answer:

y=(2±√91)

Step-by-step explanation:

A= (3,1) and B = (0,y - 1)

AB²= ( 3-0)² { 1-y+1)²

100=9+(2-y)²

91=4-4y+y²

y²-4y-87=0

y={ 4±√16+87*4) } /2

={ 4±√16+87*4) } /2

=(4±√364)/2

y=(2±√91)

Answer 2

Answer:

Y = ( 2 ± √91 )

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