What is the point 2,1 dilated by the scale factor of 2.5

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

What’s the answer ? use the picture to see the problem

Graph the equationy= x+3[tex]y = x + 3[/tex]