Question

Find the distance between the points (3, 8) and (-1, 9).

Answer 1

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Formula
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$\text {Distance } = \sqrt{ (X_1-X2)^{2} + (Y_1-Y_2)^{2} }$

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Find the distance
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Given the point (3, 8) and (-1, 9)

$\text {Distance } = \sqrt{ (3-(-1))^{2} + (8 - 9)^{2} }$

$\text {Distance } = \sqrt{(4)^{2} + (-1)^{2} }$

$\text {Distance } = \sqrt{16+ 1 }$

$\text {Distance } = \sqrt{17 }$

$\text {Distance } = 4.12 \ units$