Question

Which equation correctly shows how to determine the distance between the points (9, –2) and (6, 3) on a coordinate grid?

Answer 1

D = √(6 - 9)^2 + (3 + 2)^2]

Explanation:

This is an application of the Pythagoras theorem:

D = √ [(x2 - x1)^2 + (y2 - y1)^2] where the 2 points are (x1, y1) and

(x2, y2).

So in this case we have

D = √[(6 - 9)^2 + (3 - -2)^2]

D = √(6 - 9)^2 + (3 + 2)^2]