Question

Use the distance formula to find the length of the segment A(1, 2) to B(5, 2)

a. 16
b. 3
c. 10
d. 4

Answer 1

`\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ A(\stackrel{x_1}{1}~,~\stackrel{y_1}{2})\qquad B(\stackrel{x_2}{5}~,~\stackrel{y_2}{2})\qquad \qquad d = √(( x_2- x_1)^2 + ( y_2- y_1)^2) \\\\\\ AB=√((5-1)^2+(2-2)^2)\implies AB=√(4^2+0)\implies AB=4`