What are the coordinates of Q, if the midpoint of PQ is (2, 4) and the coordinates of P are (5, 9)?

A. (7, 13)

B.(–3, –5)

C. (–1, –1)

D. (7, –5)

Question

What are the coordinates of Q, if the midpoint of  PQ is (2, 4) and the coordinates of P are (5, 9)?

A. (7, 13)
 
B.(–3, –5)
 
C. (–1, –1)

D. (7, –5)

nnesha · Answer

midpoint formula ?

nnesha · Answer

$$\huge\rm (\frac{ x_1 +x_2 }{ 2 } , \frac{ y_1+y_2 }{ 2 })$$
midpoint formula
plug in  x and y values

anonymous · Answer

x1 = 2

X2 = 5

2 + 5 = 7

7 / 2 = 3.5

__________

y1 = 4

y2 = 9

4 + 9 = 13

13 / 2 = 6.5

nnesha · Answer

heheh question isn't find midpoint :P
i just noticed they want us to find Q coordinate

anonymous · Answer

So what do I do ._.

anonymous · Answer

Do I need to subtract ??

nnesha · Answer

|dw:1432215497534:dw|
solve for x_2
 we can set x values by x coordinate to find x of Q