If the abscissa of the intersection m of the image and the line y = 2x + 1 is 2, and the ordinate of the intersection n of the image and the line y = - x + 2 is 1, Find the analytic expression of this first-order function

If the abscissa of the intersection m of the image and the line y = 2x + 1 is 2, and the ordinate of the intersection n of the image and the line y = - x + 2 is 1, Find the analytic expression of this first-order function

Easy to know m coordinate (2,5)
N coordinate (1,1)
The linear equation passing through two points is y = 4x-3