Which best explains why these figures are similar or not similar?

41/17 as a decimal rounded to the nearest hundredth

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Write the equation of the line that passes through (3, 4) and (2, −1) in slope-intercept form. (2 points) y = 3x − 7 y = 3x − 5 y = 5x − 11 y = 5x − 9