Write a linear equation knowing these two points, (1, 2) and (4, -1)

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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 : )