contestada

Point A is at (-7, -9) and point M is at (-0.5, -3).
Point M is the midpoint of point A and point B.
What are the coordinates of point B?
9
8
7
6+
5+
4+
3
2
1
4
-98765432
2 3 4 5 6 7 8 9
-2-
- 4
-5+
-6t
-7+
-8+
-9

Respuesta :

xenia168

Answer:

B ( 6 , 3 )

Step-by-step explanation:

( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] )

( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )

Coordinates of midpoint are ( [tex]\frac{x_{1} +x_{2} }{2}[/tex] , [tex]\frac{y_{1} +y_{2} }{2}[/tex] )

~~~~~~~~~~~~~~~~~~

A ( - 7 , - 9 )

B ( x , y )

M ( - 0.5 , - 3 )

[tex]\frac{-7+x}{2}[/tex] = - 0.5 ⇒ x = 6

[tex]\frac{-9+y}{2}[/tex] = - 3 ⇒ y = 3

B ( 6 , 3 )

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