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As shown in figure 1-5-1, the line y = KX + B (k)
The solution set is x < 3
As shown in the figure, if the intersection of the line y = KX + B (k > 0) and the X axis is (- 2, 0), then the solution set of the inequality KX + B < 0 about X is______ ．
∵ the intersection point of the straight line y = KX + B (k > 0) and the X axis is (- 2, 0), ∵ y increases with the increase of X. when x ＜ - 2, y ＜ 0, that is, KX + B ＜ 0. So the answer is: X ＜ - 2
As shown in the figure, the two intersections of the line y = KX + B and the coordinate axis are a (2,0) and B (0, - 3), respectively. Then the solution set of the inequality KX + B + 3 ≥ 0 is ()
A. x≥0B. x≤0C. x≥2D. x≤2
The intersection of the line y = KX + B and the Y axis is B (0, - 3), that is, when x = 0, y = - 3, because the value of function y increases with the increase of X, when x ≥ 0, the value of function KX + B ≥ - 3, and the solution set of inequality KX + B + 3 ≥ 0 is x ≥ 0
RELATED INFORMATIONS
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