Please solve11 giving brainlist

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

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great