已知一次函数y=(1-3k)x+2k-1.
(1)当k取何值时,直线经过原点?
(2)当k为何值时,直线与y轴的交点在x轴的下方?
人气:478 ℃ 时间:2020-02-03 08:52:45
解答
(1)当x=0,y=0,直线过原点,代入得:0=2k-1,k=1/2;
(2)意思是,x=0时,y
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