Given the function y = KX + B, if the area of the triangle formed by the function and the two coordinate system is 6, and the solution of the equation KX + B = 0 is y = 4, find the analytic expression of the function Please try to be complete,

Given the function y = KX + B, if the area of the triangle formed by the function and the two coordinate system is 6, and the solution of the equation KX + B = 0 is y = 4, find the analytic expression of the function Please try to be complete,

Let's know that the solution of equation KX + B = 0 is y = 4? X = 4
According to the meaning of the title, B = 2 × 6 △ 4 = 3
k=4/3
y=4x/3+3