Find the image passing through point (2, - 1) of positive scale function in expression (1) (2) The image of a linear function passes through points (0,4 / 3) and (1 / 2,3) (3) It is known that the ordinate of the intersection of the image and Y-axis of the linear function y = KX + B is - 5, and when x = 1 and y = 2, the expression of the function is? | Math enthusiast | Mathematical art

Find the image passing through point (2, - 1) of positive scale function in expression (1) (2) The image of a linear function passes through points (0,4 / 3) and (1 / 2,3) (3) It is known that the ordinate of the intersection of the image and Y-axis of the linear function y = KX + B is - 5, and when x = 1 and y = 2, the expression of the function is?

(1) The image of positive scale function passes through the point (2, - 1) y = kx-1 = 2KK = - 1 / 2 expression y = (- 1 / 2) x (2) first-order function y = KX + B (0,3 / 4) and (1 / 2,3) substituting into 3 / 4 = B3 = 1 / 2 * k + BK = 9 / 2. The ordinate of the intersection of the image of first-order function y = (9 / 2) x + (3 / 4) (3) y = KX + B and Y axis is - 5B = - 5Y = kx-5x = 1, y = 2 generation

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