Question

What is the distance between points a(6,-1) and b(-2,-1)?

Answer 1

it the length of the hypotenuse created by ploting the points

Answer 2

or since its a straight line ....

Answer 3

on an interval [a,b] the range, or distance, is equal to b-a

Answer 4

\[d = \sqrt{(x_{a} - x_{b})^{2} + (y_{a}-y_{b})^{2}} = \sqrt{(6-(-2))^{2} + ((-1)-(-1))^{2}} = 8\]