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skad [1K]
3 years ago
11

The midpoint of BC is (5, -2). One endpoint is B (3,4). What are the coordinates of endpoint C?

Mathematics
2 answers:
KonstantinChe [14]3 years ago
5 0

Let the midpoint of BC be M(x_{_M};~y_{_M}).

Then x_{_M}=\dfrac{x_{_B}+x_{_C}}{2} and y_{_M}=\dfrac{y_{_B}+y_{_C}}{2}.

We are given x_{_M}=5, y_{_M}=-2 and x_{_B}=3, y_{_B}=4.

5=\dfrac{3+x_{_C}}{2}\Rightarrow x_{_C}=7\medskip\\{-2}=\dfrac{4+y_{_C}}{2}\Rightarrow y_{_C}=-8

C(7;-8)

Alja [10]3 years ago
3 0

Answer:

The coordinates of endpoint C are (7,-8).

Step-by-step explanation:

Given information: Midpoint of BC is (5, -2) and B(3,4).

We need to find the coordinates of C.

Let the coordinate of C are (x,y).

If end points of a line segment are (x_1,y_1) and (x_2,y_2), then the midpoint of that segment is

Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

Midpoint of BC is

Midpoint=(\frac{3+x}{2},\frac{4+y}{2})

Midpoint of BC is (5,-2).

(5,-2)=(\frac{3+x}{2},\frac{4+y}{2})

On comparing both sides.

5=\frac{3+x}{2}

10=3+x

10-3=x

7=x

The value of x is 7.

-2=\frac{4+y}{2}

-4=4+y

-4-4=y

-8=y

The value of y is -8.

Therefore the coordinates of endpoint C are (7,-8).

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