Probably because people gave you the wrong answer. Not saying they did this intentionally....
<em><u>Using</u></em><em><u> </u></em><em><u>mid</u></em><em><u> </u></em><em><u>point</u></em><em><u> </u></em><em><u>formula</u></em><em><u>.</u></em>
In which we have
Q(-4,5)=(6+x/2) , (2+y/2)
-4=6+x/2 and 5 =2+y/2
-8=6+x and 10=2+y
x=-14 and y=8
Therefore the required value of R{-14,8}
Step-by-step explanation:
slope(m)=(Y-Y1)/X-X1
here,
M=1
(X1,Y1)=(11,3)
NOW,
m=(Y-Y1)/(X-X1)
1=(Y-3)/(X-11)
1×(X-11)=Y-3
X-11=Y-3
X-Y-11+3=0
X-Y-8=0
X-Y=0 is the required equation.