[填空题]
A small town is plann,k:uy x/1ru vps56thi ing the construction of a new road. Tn00joe-(xm8 b(m (le +vmwl urhe new road will pass through the point A(0,5) and will be perpendicular to the road connecting the points B(3,0) and C(6,6). This information is shown in-0 (8+ovw eml belr ((j0nmxum the following diagram.
1.Find the gradient of the line through points B and C. $m_{BC}$ =
2.Hence, state the gradient of the line through points A and D. $m_{AD}$ =
3.Find the equation of the line through A and D. Give your answer in the form y=mx+c. m = c =
4.Point D lies on the x-axis. Find the coordinates of point D. (a,b) a= b=
