## Yumira The midpoint of a line segment with end points as (-1, 5) and (x2, 7) is (-4, 6). What is the value of x2? -14 -2 -7 -3 one year ago one year ago

1. tcarroll010

The midpoint of the segemnt with endpoints (x1, y1) and (x2, y2) is the average for each coordinate. This is the ordered pair:$(\frac{ x _{1}+x _{2} }{ 2 }, \frac{ y _{1}- y _{2} }{ 2 })$For the moment, just looking at the y-coordinate, you'll see that the midpoint value of 6 is determined by averaging 7 and 5. So, for the x-coordinate, you average x2 and -1 to get -4. [x2 + (-1)] / 2 = -4 x2 - 1 = -8 so, x2 = -7.

2. tcarroll010

typo: the ordered pair for y is also supposed to be "+"

3. tcarroll010

(y1 + y2)/2 that is. Accidentally hit the minus sign.

4. Yumira

thanks Agian Lol Your A Life Saver :D