Please help. i have acellus and if you can help please show work so i can understand

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

With number 11 ( show how you got the answer)

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.