A store tells T-shirts x in packes of 5 and regular shirts y individually. Graph the function \(\text{y} = 10 - 5\text{x}\) to determine the number of each type of shirt of Bethany can have if she buys 10 shirts.
Fancy goldfish x cost $3 each and common goldfish y cost $1 each. Graph the function \(\text{y} = 20 - 3\text{x}\) to determine how many of each type of goldfish Tasha can buy for $20.