Posted by **Enno** on Friday, February 3, 2012 at 7:33pm.

The midpoint of rectangle PTQW is (-0.5,6). The coordinates of P are (-3.5,6). What are the coordinates of Q?

- Coordinates -
**Reiny**, Friday, February 3, 2012 at 8:21pm
let the other end point be (x,y)

so (x-3.5)/2 = -.5

x-3.5 = -1

x = 2.5

(y+6)/2 = 6

y+6 = 12

y = 6

other point is (2.5 , 6)

- Coordinates -
**Enno**, Friday, February 3, 2012 at 11:00pm
Thanks so much.....ur rite!

- Coordinates -
**Enno**, Friday, February 3, 2012 at 11:06pm
Ok, one more question. U see when u have (x-3.5)/2 = -.5

x-3.5 = -1 (how did u get -1)

- Coordinates -
**Kushashwa**, Thursday, April 18, 2013 at 10:49pm
@enno , there is -1 because :

we had : (x-3.5)/2 = -.5

multiplying 2 both sides

(x-3.5)/2 *2 = -.5 *2

x-3.5 = -1

and then you can proceed easily.

if a/b = c

then a = bc

I hope it helped u though I helped u 1 year later :P

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