What is the equation for the line that passes through the points (-2,1) and (4,7)

What could explain what happened when the time was equal to 120 minutes

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

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?