Question

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

Answer 1

`D= 10`

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=√((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 =√((-7-1)^2+(7-1)^2)`

`D =√((-8)^2+(6)^2)`

`D =√(64+36)`

`D =√(100)`

`D= 10`