x is the number of gifts to be wrapped
the cost at the department store is $5 per gift
cost at the department store = 5x
the customer can pay his niece a flat fee of $50
cost of the niece: 50
cost of the niece= cost at department store
5x=50
x=50/5
x=10
y= cost
x=is the number of gifts to be wrapped
the system of equation is
y=5x ---- equation of the department store
y=50 --- equation of the niece
the graph will be
as we can see the two lines intercept when the number of gifts is equal to 10