Question

What is the distance between A (1, 1) and B (7, -7)

Answer 1

Answer:

$D= 10$

Step-by-step explanation:

Here we are given with two coordinates and asked to determine the distance between them.

Here we are going to use the distance formula, which is given as under

 

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

 

Where

$(x_1,y_1) = (1,1)$

$(x_2,y_2) = (7,-7)$

 

Replacing these values in the distance formula

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

$D =\sqrt{(-8)^2+(6)^2}$

$D =\sqrt{64+36}$

$D =\sqrt{100}$

$D= 10$