Question 1101766
The ticket agency adds a fixed fee of {{{"$8"}}} to every order.
The price {{{y}}} of the order
varies linearly with the number {{{x}}} of tickets ordered as
{{{y=mx+b}}}
{{{m=(93-42)/(5-2)=51/3=17}}} ,
so the price of each ticket is {{{"$17"}}}.
For 2 tickets , {{{x=2}}} and {{{y=42}}} .
Substituting those values and {{{m=17}}} , we get
{{{42=17*2+b}}}
{{{42=34+b}}}
{{{42-34=b}}}
{{{b=8}}}