Question

2. Find the distance between A (-1, 4) and B (1.-1) 5.39 5.19 5.29 5.09

Answer 1

Answer: A) 5.39

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Explanation:

Apply the distance formula.

$d = \sqrt{ (x_1-x_2)^2+(y_1-y_2)^2}\\\\d = \sqrt{ (-1-1)^2+(4-(-1))^2}\\\\d = \sqrt{ (-1-1)^2+(4+1)^2}\\\\d = \sqrt{ (-2)^2+(5)^2}\\\\d = \sqrt{ 4+25}\\\\d = \sqrt{ 29}\\\\d \approx 5.38516\\\\d \approx 5.39$

You could also use the pythagorean theorem which is what the distance formula is based off of.