RameMM
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  • 11-09-2020
  • Mathematics
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Of Q is the midpoint od RP, Find the coordinates of R if P(9,-2) and Q (4,5)

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adhikariaiso123
adhikariaiso123 adhikariaiso123
  • 11-09-2020

Answer:

(-1,12)

Step-by-step explanation:

let R be(x,y)

Q(4,5)=midpoint

R(x,y)=(x1,y1)

p(9,-2)=(x2,y2)

now,

(4,5)= x1+x2/2 , y1+y2/2

(4,5)= x+9/2 , y-2/2

so,

x+9/2=4              y-2/2=5

x+9=8                  y-2=10

x= -1                      y=12

therefore, R(x,y)= (-1,12)

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