The analytic expressions of the function y = KX + B are determined according to the following conditions (1) When x = 5, y = 6 (2) Line y = KX + B passes through points (3,6) and points (1 / 2, 1 / 2) ————————————————————————————

(1) Since y is in direct proportion to x, let y = KX, and take x = 5 and y = 6 into it, we get 6 = 5K and K = 6 / 5
(2) 1.6=3k+b
2.-1/2=1/2k+b
The solution of this bivariate linear inequality is k = 13 / 5, B = - 9 / 5

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