Question

PLEASE HELP!!!!
the midpoint of the segment with endpoints at (-1,y) and (y,16) is (3,4). what is the value of y

Answer 1

@jim_thompson5910

Answer 2

@ganeshie8

Answer 3

@Hero @aaronq

Answer 4

to find the midpoint, you average the corresponding coordinates

Answer 5

what that means is that you add up the corresponding coordinates, then divide by 2

Answer 6

so say we had these two points

A(2, 3)
B(6, 9)

We would average the x coordinates

(x1+x2)/2 = (2+6)/2 = 8/2 = 4

then average the y coordinates

(y1+y2)/2 = (3+9)/2 = 12/2 = 6


So the midpoint is (4,6). This is just an example of course and not the answer.

Answer 7

can u please show me how to do the problem above its for my little brother im embarrassed I can help him

Answer 8

@jim_thompson5910

Answer 9

here are the two points (-1,y) and (y,16)

Answer 10

what are the x coordinates of each point?

Answer 11

ok so
-1 -y
&
y-16

Answer 12

-1 and y are the x coordinates of (-1,y) and (y,16)

Answer 13

add those two x coordinates up and divide by 2

(-1+y)/2

Answer 14

the midpoint is (3,4)

Answer 15

the x coordinate of the midpoint is 3

that means

(-1+y)/2 = 3

Answer 16

wait is that the answer or do i have to make any more steps

Answer 17

you now have to solve for y