If the line Y = x + 3 B and the two axes of the area of a triangl_数学解答

If the line Y = x + 3 B and the two axes of the area of a triangle is 6 units, is for B?

人气：154 ℃　时间：2020-04-07 11:48:25

解答

原意为若直线Y=3X+B与两坐标轴所围成的三角形的面积是6个单位,则B为?令x=0,则得y=B,令y=0,则得x=-B/3,可知两坐标轴所围成的三角形是个直角三角形,它的两直角边为|B|和|-B/3|,则面积等于=1/2*|B|*|-B/3|=6|B|*|-B/3|=...