Question

Find the distance d(A,B) between points A and B.A(2,- 7); B(2,1)

Answer 1

To determine the distance between two points you can use the following formula:

$d=\sqrt{(x_1-x_2)^2+(y_2-y_1)^2}.$

Substituting the given values in the above formula, you get:

$d=\sqrt{(2-2)^2+(-7-1)^2}.$

Simplifying you get:

$d=\sqrt{0+64}=8.$

Answer:

$8.$