3(2x-2) - 2(x-2) simplified

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

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 : )

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test