Mathematics, 09.06.2020 02:57 10040813
The midpoint of segment AB is M(−2,2). If A is located at (−5,7) find the coordinates of the endpoint B.
Solution
Since we do not know the coordinates of point B we will use (x2,y2) as our coordinate. We will use our given point A and B and substitute into the midpoint formula. We would start with
M=(x1+x22,y1+y22)
Now let’s substitute in our given values.
( , 2)=((−5+x2)2,(7+y2)2)
Find x2 and y2
We will now set up two equations to solve for our two unknowns of x2 and y2.
( +x2)/2=
We will first want to multiply by 2 on both sides and will get
−5+x2=−4
Adding 5 to both sides we get
x2=
This is the x coordinate of point B. Now we will set up the equation to solve for y2
( +y2)/2=
We will first want to multiply by 2 on both sides and will get
+y2=
y2=
This is the y-coordinate of point B. The coordinates of point B are
( , )
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The midpoint of segment AB is M(−2,2). If A is located at (−5,7) find the coordinates of the endpoin...
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