Answer:
Q (3.4)
Step-by-step explanation:
Midpoint for point (x1,y1) and (x2,y2) is given by
(x1+x2)/2, (y1+y2)/2.
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Given
one endpoint ( R(1, -1)
midpoint is M(2,1.5)
we have to find coordinates of endpoint Q
let Q(x,y)
Thus, for x coordinate of midpoint
2 = (1+x)/2
=> 2*2 = 1+x
=> 4 = 1+x
=> x = 4-1 = 3
x coordinate of midpoint m is 3
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for y coordinate of midpoint
1.5 = (-1+y)/2
=> 2*1.5 = -1+y
=> 3 = -1+ y
=> y = 3 + 1 = 4
y coordinate of midpoint m is 4
Thus, the coordinates of endpoint Q (3.4)
