1,direct...5miles per hours....so its 1:5 2:10 and so on. there is a pattern thats why direct
2.neither...5mile walk..you dont really have any other variable. so its neither
3.inverse....height decreases while time increases...so its inverse
4.neither....well there is no variable to manipulate here.. all there is to the statement is a fixed definition of the triangle
i may be wrong at some points. but i hope i helped you out