Does any one have advice for an eighth grader on taking algebra 1 eos (end of semester test)?

100 points, hi, i’m not sure how to get the equation from the graph and table.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.