Question

find the distance between points I and J from the diagram. Give your answer to the nearest tenth.

Answer 1

to find the distance between two points we must use this equation

$d=\sqrt[]{(x2-x1)^2+(y2-y1)^2}$

where (x2,y2) is a right point from (x1,y1)

on this case (x2,y2)=J and (x1,y1)=K

K(1,1)

J(2,5)

so, replacing

$\begin{gathered} d=\sqrt[]{(2-1)^2+(5-1)^2} \\ \\ d=\sqrt[]{1+16} \\ d=\sqrt[]{17}\approx4.123 \end{gathered}$