How do you find the distance between the points (12,3), (-8,3)?

Question

1345 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-05-23T18:31:36

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:

$d = sqrt((color(red)(-8) - color(blue)(12))^2 + (color(red)(3) - color(blue)(3))^2)$

$d = sqrt((-20)^2 + 0^2)$

$d = sqrt((-20)^2)$

$d = sqrt(400)$

$d = 20$