Write the equation of the line with the given slope and y-intercept. slope = 1 2 y-intercept = 7 a) y = 7x + 1 2 b) y = 1 2 x + 7 c) x = 7y + 1 2 d) x = 1 2 y + 7

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 : )