Find 3 solutions for the linear equation 4x - 3y = 1 and plot the solutions as points on a coordinated plane- help please

Agroup of five people go out to eat and buy appetizers and main dishes they decide to split the bill so each person pays 20% of the total cost appetizers are $5 and main dishes are $10 write an expression to show how much each person pays explain it with how to solve the problem