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scoray [572]
3 years ago
14

The midpoint of the line segment from P1 to P2 is (-7, 1). If P1=(-5, 9)​, what is P2?

Mathematics
1 answer:
Aneli [31]3 years ago
3 0

Answer:

Therefore the coordinate of  P₂ is (-3,1)

Step-by-step explanation:

Mid point: The mid-point is a point from where the distance of the end points of a line segment is equal.

The co-ordinate of mid point of (x₁,y₁)  and (x₂,y₂) is (\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )

Here x₁= -5  and y₁= 9

And the coordinate of the mid point is (-7,1).

Let the coordinate of P₂ be (x,y)

Therefore the coordinate of midpoint of P₁ and P₂ is

(\frac{-7+x}{2} ,\frac{1+y}{2} )

According to the problem,

\frac{-7+x}{2} =-5

\Rightarrow -7 +x=(-5)\times 2

\Rightarrow -7 +x=-10

\Rightarrow x=-10+7

\Rightarrow x= -3    

and          

\frac{1+y}{2} = 1

\Rightarrow 1+y= 1\times 2

\Rightarrow 1+y=2

\Rightarrow y=2-1

\Rightarrow y=1

Therefore the coordinate of  P₂ is (-3,1)

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