[求助]PREP数学题，谢谢了

huangxiaoyan

In the xy-plane, what's the y-intercept of the line L?

1)The slope of line L is 3 times its y-intercept.

2)The x-intercept of line L is -1/3.

答案是E.

玻璃胶带

(1)(2)条件得出的式子是一样的

都可以表示为: y=kx+1/3k

huangxiaoyan

多谢