Question

one endpoint of a line segment has coordinates(-3,-1). The midpoint of the line segmaent is at (1,1), what is the location of the other end point?

Answer 1

you use the midpoint formula to find the midpoint, but since you already know the midpoint, and one of the endpoints, plug in what you know in to the formula, and solve for the other endpoint.
?

Answer 2

let the other endpoint be (a,b)

then (a-3)/2 = 1 and (b-1)/2 = 1
a = 5 and b = 3

test it by finding the midpoint between (5,3) and (-3,-1)

Answer 3

Thanks a lot, i think you are very smart reiny

Answer 4

thanks for your help y912