1. Given 2 ordered pairs, it’s the AVG of the x’s and AVG of the y’s.
Midpoint
Given 2 ordered pairs, it’s the
AVG of the x’s and
AVG of the y’s.

2. Midpoint Formula

3. (.5, 5.5) (5.5, 6) Find the midpoint. 1. (3, 7) and (-2, 4)

4. (8.5, 3.5) (2.5, 13) Find the midpoint. (3, -9) and (14, 16)

5. Find the midpoint. 5.
(2, 3)

6. Find the midpoint. 6.
(1.5, 4)

7. Given the midpt and one endpt, find the other endpt.7.
Midpt (3, -6)
Endpt (7, -3)
(-1, -9)

8. Given the midpt and one endpt, find the other endpt.8.
Midpt (-1, 2)
Endpt (3, 0)
(-5, 4)

9. Given the midpt and one endpt, find the other endpt.9.
Midpt (-4, 6)
Endpt (2, 1)
(-10, 11)

10. Partition Line Segments (2 Dimensions)

11. Formula

12. What do you do when it doesn’t partition evenly?

13. Formula

14. Ex 1: Given the points A(–3, -2) and B(6, 1), find the coordinates of the point P on directed line segment that partitions in the ratio 2:1.

15. Ex 2: Given the points A(-3, -4) and B(2, 0), find the coordinates of the point P on directed line segment that partitions in the ratio 2:3.

16. Ex 3: Given the points A(-4, 4) and B(0, -4), find the coordinates of the point P on directed line segment that partitions in the ratio 1:3.

17. Ex 4: Given the points A(-2,1) and B(4, -4), find the coordinates of the point P on directed line segment that partitions in the ratio 2:4.