What’s the answer and how do you figure these out?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Can someone me with my math problem pls my teacher is on my back about this