4(y₁-y₂)+(y₁+y₂)+(x₁-x₂)(x₁+x₂)=0
问题描述:
4(y₁-y₂)+(y₁+y₂)+(x₁-x₂)(x₁+x₂)=0
补充y₁+y₂/2=1 x₁+x₂/2=3 化简成y=kx的形式,求出K值.
4(y₁-y₂)(y₁+y₂)+(x₁-x₂)(x₁+x₂)=0 是这个。不好意思
答
应该是4(y₁-y2)*(y₁+y₂)+(x₁-x₂)(x₁+x₂)=0把y1+y2=2,x1+x2=6代入,得:8(y1-y2)+6(x1-x2)=0所以:4(y1-y2)=-3(x1-x2)所以:(y1-y2)/(x1-x2)=-3/4而k=(y1-y2)/(x1-x2)...