312.5/x=100/12.8
<span>(312.5/x)*x=(100/12.8)*x </span>
<span>312.5=7.8125*x </span>
<span>312.5/7.8125=x </span>
<span>40=x </span>
<span>x=40</span>
X = 3
and
formula -
(y-y1)/(x-x1) = (y2-y1)/(x2-x1)
(x1,y1) = (4,1)
(x2,y2) =( 5,3)
(y-1)/(x-4) = (3-1)/(5-4)
y-1/x-4 = 2/1
y-1 = 2x - 8
y = 2x - 7
the solution will be x= 3 and y = -1
2(x+3)= 3x-1
2x+6=3x-1
X=7
Therefore
YM = 7+3= 10
And by definition of midpoint YM=MZ so MZ=10
