数学题What is they-intercept of the line tangent to the circle x²+y这是网友给的答案和解题的图片.求问切线AB的斜率怎么算?数字是怎么出来的?过圆X²+ Y²= 1的切点P（3／5,4 / 5）的切线AB在Y轴上

This is what they Many people are surprised when they find out the inte... This is what they 急用! what i need is what they what delicious food ( )!A they areBit is What is nice people they are!是什么意思? What color is it are they? here is what they said是什么从句 What()they have?( are do does is) All they do is what they have to do,not what they like to do. They have discovered what is the matter 同义句 They have___ ____ what is the matter ——what they are talking about A.they are Bthis is Cthere is Dthat is we asked some people what they think and this is what they said.翻译 What they need is increasingly what they are not getting 怎么翻译这句话? what they 英语翻译这句话的前后语境：people know what they do; they frequrently know why they do what they do; but what they don't know is what what they do does. what nice sheep___!A it is B is it C are they D they are What nice presents___________!A.it is B.is it C.are they D.they are