Question

A line segment on a number line has its endpoints at -9 and 6. Find the coordinate of the midpoint of the segment.

A. 1.5
* B. -1.5
C. 2
D. -3

Find the coordinates of the midpoint of HX given that H(-1,3) and X(7,-1).

A. (3,1)
* B. (0,4)
C. (-3,1)
D. (-4,0)

please help!

Answer 1

For the second part of the question, the formula for the midpoint of a line is \[(\frac{ x1 + x2 }{ 2 }, \frac{ y1 + y2 }{ 2 })\]so \[\frac{ 7-1 }{ 2 }, \frac{ 3-1 }{ 2 }\], so that simplified will give the answer.

Answer 2

For the first part of the question,
Thus 9 + 6 will give us the full length of the line. 15 is then divided by 2. and the result is added to -9 to get the final answer.

Answer 3

so is number two A?

Answer 4

and my first is correct?

Answer 5

Yep, your first is correct and number two is A! :)