如图，在平面直角坐标系中，A（﹣1，5）、B（﹣1，0）、C（﹣4，3）．

（1）在图中作出△ABC关于y轴的对称图形△A₁B₁C₁．

（2）写出点A₁、B₁、C₁的坐标．

    Who says dogs don't need to wear beautiful clothes? My dog Michael has many different kinds of1, and he likes them a lot. Look at him in the picture! He is2 a grey hat, a yellow shirt and red shoes today. And he also wears a3 of sunglasses. You look so4, Michael! I design clothes for Michael.It takes me a lot of free time, 5 I enjoy it. All of Michael's clothes are made 6good cotton. And they 7 him very well. Every time I take Michael out for a 8 in the park, I can hear people saying, “Oh, look at that dog. How fashionable he looks!” I'm very happy about it. It 9 that Michael is already a star. Walk for today, Michael. What? You want to play with the ball? All right, let's go! Oh, 10me! I'm putting on my sneakers.

若函数$f\left(x\right)=1+\frac{m}{a^x-1}$$(a>0$，$a$≠0$)$是奇函数，则$m$为（   ）