If the area of △ abo (o is the coordinate origin) is 2, then the value of B is______ ．

If the area of △ abo (o is the coordinate origin) is 2, then the value of B is______ ．

If the line y = KX + B passes through the point a (- 2, 0), and the intersection coordinate of the line y = KX + B and the Y axis is (0, b), then the area of △ ABO is 12 × 2 · B = 2, and the solution is b = 2. So the value of B is 2

If the area of △ abo (o is the coordinate origin) is 2, then the value of B is ()
A. 1B. 2C. 3D. 4

∵ the area of the straight line y = KX + B passing through the point a (- 2, 0) and a point B on the positive half axis of Y axis, ∵ - 2K + B = 0, B (0, b), △ ABO is: 12 × 2 × B = 2, the solution is b = 2

The line y = X-2 intersects the Y axis at point a, the line y = KX + B intersects the Y axis at point B and intersects the y = X-2 at point C. given that the ordinate of point C is 1 and s △ ABC = 9, the values of K and B are obtained

∵ the line y = KX + B and y = X-2 intersect at point C, the ordinate of point C is 1, ∵ 1 = X-2, the solution is: x = 3, ∵ C (3,1), ∵ the line y = X-2 intersects with y axis at point a, ∵ a (0, - 2), ∵ s △ ABC = 9, ∵ 12ab · 3 = 9,