3questions in geometry asap

1. point j is located at (2,5) and point k is located at (4,19).

what are the coordinates of the point that partitions the directed line segment jk in a 3: 2 ratio?

2. what are the coordinates of the midpoint of the line segment with endpoints r(4,−7) and s(−3,5)?

3. the length of ab is 5 units.

what is the length of the image of the line segment after a dilation with a scale factor of 5/2?