Find the distance between two points a(-1,1) and b(3,-5)

let A be (x1,y1)= -1,1

B be (x2,y2)= 3,-5

distance between AB = root under (x2-x1)square + (y2-y1)square

=root under (3- - 1)square +(-5-1)square

= root under 4 square + (-6) square

=root under 16 +36

=root under 52 units

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step-by-step explanation:

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option b  

step-by-step explanation:

we know that

the distance from point n to lm in the figure is equal to the distance of the perpendicular line to lm that passes through the point n

so

the distance is equal to the segment no

> given problem

therefore

the distance from point n to lm is equal to