[填空题]
A small town is planna24e76 ;xgjienck9jc ing the construction of a new road. The new roakfri:ag8 w.*vq;oa ;ed will pass thrio: rvw fe *a8g;akq;.ough 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 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=
