当前位置: > 关于有些单词我已经标号中文了...
题目
关于有些单词我已经标号中文了
Find the equation(方程) of a line with each of the following characteristics.
1.parallel(平行) to the line y = 3x + 5 and has a y-intercept(y截距) of -1
2.perpendicular(垂直) to the line y = 1⁄3x + 4 and has an x-intercept(x截距) of 2.

提问时间:2020-08-01

答案
1.y=3x-1parallel => slope=3y=3x+csubstitute x=0, y=-1 into above equation => c=-12.y=-3x+6perpendicular => slope*1/3=-1 => slope=-3y=-3x+csubstitute y=0, x=2 into above equation => c=6
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
版权所有 CopyRight © 2012-2019 超级试练试题库 All Rights Reserved.