SOLUTION: line segment AB has the endpoints A(-4,5) and B(3,5). what is the x-coordinate of a point C such that B is the midpoint of line segment AC

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Question 994825: line segment AB has the endpoints A(-4,5) and B(3,5). what is the x-coordinate of a point C such that B is the midpoint of line segment AC
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
given:
A(-4,5) and B(3,5)
The y-coordinates are both +5+
That means this is a horizontal line
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C( x,5 ) are coordinates of point C
If B is the midpoint, I can say:
+%28+x+%2B%28-4%29+%29+%2F+2+=+3+
+x+-+4+=+2%2A3+
+x+-+4+=+6+
+x+=+10+
Point C is C( 10, 5 )