Question

What’s the distance ?

Answer 1

Answer:

$3$

Step-by-step explanation:

This problem asks one to find the length of the given line. Another way to think about this problem is to believe that the problem asks one to find the distance from one point to another. The endpoints on this line are the following,

$(4,2), (5, 5)$

The formula to find the distance between two points on a 2-dimensional coordinate plane is as follows,

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

Substitute the endpoints of the line into the formula and solve for the distance between the points,

$D=\sqrt{(4-5)^2*(2-5)^2}$

Simplify, solve for the distance between the two points,

$D=\sqrt{(4-5)^2*(2-5)^2}$

$D=\sqrt{(-1)^2*(-3)^2}\\\\D=\sqrt{1*9}\\\\D=\sqrt{9}\\\\D=3$