after $5$ minutes waiting for the bus, your bus tracker app says it is $2\mathrm{.}3$ miles away. after $15$ minutes waiting for the bus, the app says it is $1\mathrm{.}3$ miles away. assuming the bus travels at a constant speed, write a linear equation y$=$mx$+$b which models y $($the bus's distance from you in miles$)$ in terms of x $($the amount of time you've been waiting in minutes$).$