How do you find the distance between points (6,-9), (9,-9)?

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Answer 1 · 2017-05-28T14:48:58

See a solution process below:

The formula for calculating the distance between two points is:

$d = sqrt((color(red)(x_2) - color(blue)(x_1))^2 + (color(red)(y_2) - color(blue)(y_1))^2)$

Substituting the values from the points in the problem gives:

$d = sqrt((color(red)(9) - color(blue)(6))^2 + (color(red)(-9) - color(blue)(-9))^2)$

$d = sqrt(3^2 + 0^2)$

$d = sqrt(9 + 0)$

$d = sqrt(9)$

$d = 3$