Please I need help ASAP 2y/x+4 =10

Suppose y varies directly as x, and y= 24 when x =8. What is the constant of proportionality?

Solve for x i'll try to attach the files bc it's not letting me for some reason

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary