in diagram below ab parallel to cd what is the value of x

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the endpoints of a line segment graphed on a cartesian coordinate system a (-2,6) and (1,2). what are the aoordinates of the midpoint of the segment?
recall the formula for midpoint:
(Xm,Ym)=([X1+X2]/2, [Y1+Y2]/2)

therefore,
(X1+X2)/2 = (-2+1)/2 = -1/2
(Y1+Y2)/2 = (6+2)/2 = 4

(Xm,Ym) = (-1/2,4)

so there,, =)