What is the length of AB, given #A(5, -2)# and #B(-3, -4)#?
1 Answer
Jan 17, 2018
Explanation:
#"calculate the length using the "color(blue)"distance formula"#
#color(red)(bar(ul(|color(white)(2/2)color(black)(d=sqrt((x_2-x_1)^2+(y_2-y_1)^2))color(white)(2/2)|)))#
#"let "(x_1,y_1)=(5,-2)" and "(x_2,y_2)=(-3,-4)#
#AB=sqrt((-3-5)^2+(-4-(-2))^2#
#color(white)(AB)=sqrt(64+4)=sqrt68~~8.25(" 2 dec. places")#
