Question #28c14

1 Answer
May 11, 2017

Presuming you are asking for the distance between the two points use the distance formula derived from Pythagoras theorem

Explanation:

Distance = #sqrt (("x2" - "x1")^2 + ("y2" - "y1")^2#

Now, we just have to substitute the values in for the variables:

Distance = #sqrt (("x2" - "x1")^2 + ("y2" - "y1")^2#
= #sqrt (("-1" - "1")^2 + ("5" - "-4")^2#
= #sqrt ((-2)^2 + (9)^2#
= #sqrt ((4 + 81)#
= #sqrt (85)#
#approx 9.22#

#therefore# The distance between A and B is #9.22# units

All the best!