Yvaries directly with x, and y = 5 when x = 4. what is the value of x when y = 8?

Which fraction below is equivalent to 10/12?

If you could answer these your a life saver

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )