Let us assume that the first company the cab flat rate is 5$ and the cap driver charges 2$ per mile .for the second company the cab flat rate is 3$ and the cab driver charges 3$ per mile. a. the company charges per ride at least 5$ and an extra 2$ per mile b.the equation we will choose is slope intercept since we know the y-intercept which is the cab flat rate . y=mx+b where m :is the slope b:is the y-intercept y:total amount x. is the milage total amount=2x+5. c.the slope will be 2$ which is the change in amount per mile.the y-intercept will be the cab's flat rate.