已知一次函数y =kx+1(k≠0)的图像与x轴、y轴分别交于A、B两点,且oa=2ob,p为第二象
人气:238 ℃ 时间:2020-04-14 04:38:28
解答
当x=0时,y=1,即ob=1
所以oa=2,且p为第二象限,则:
k=ob/oa=1/2
y=1/2 x+1
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