What is the slope that is  parallel  to the line created by (1,2) and (3,4

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 : )

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Which numbers have the same absolute value? choose all that apply. asap will mark at brainliest