Contact us
Choose a category below so we can get back to you as quickly as possible.
把x=1y=2和x=−1y=4代入方程y=kx+b中得:k+b=2①−k+b=4②,①-②得:2k=-2,解得k=-1;①+②得:2b=6,解得b=3,所以k=−1b=3.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.