Answer:
p=11
Step-by-step explanation:
let A(3,7),B(-6,1),C(9,p) be the points.
or
B(-6,1),A(3,7),C(9,p) are the points in the same line.
let A divides BCin the ratio k:1
B. 11
3 7 <u>11</u> 14 16 <em>16 </em>18 21 22 23 27