OMG PLEASE HELP ASAP I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS IT CORRECT AND DOES ALL THE PROBLEMS PLEASE.

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

Yo need asap pls ! markin da brainiest too !