SAT求助,一道SAT题,我忘记公式了..
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:英语作业 时间:2024/07/09 01:14:24
SAT求助,一道SAT题,我忘记公式了..
In the xy-coordinate plane above,line contains the points (0,0) and (1,2).If line m (not shown) contains the point (0,0) and is perpendicular to ,what is an equation of
(A) y = -1/2x
(B) y = -1/2x+1
(C) y = -x
(D) y = -x+2
(E) y = -2x
请给出具体的解题步骤,公式忘的差不多了我...
![](http://img.wesiedu.com/upload/5/e4/5e4bac66e71f69dacc6c3f1ee71a8053.jpg)
In the xy-coordinate plane above,line contains the points (0,0) and (1,2).If line m (not shown) contains the point (0,0) and is perpendicular to ,what is an equation of
(A) y = -1/2x
(B) y = -1/2x+1
(C) y = -x
(D) y = -x+2
(E) y = -2x
请给出具体的解题步骤,公式忘的差不多了我...
![](http://img.wesiedu.com/upload/5/e4/5e4bac66e71f69dacc6c3f1ee71a8053.jpg)
![SAT求助,一道SAT题,我忘记公式了..](/uploads/image/z/7874287-7-7.jpg?t=SAT%E6%B1%82%E5%8A%A9%2C%E4%B8%80%E9%81%93SAT%E9%A2%98%2C%E6%88%91%E5%BF%98%E8%AE%B0%E5%85%AC%E5%BC%8F%E4%BA%86..)
Answer:(A)
Here's why:
According to the graph,we know that the equation for line l is y=2x.By given that line m is perpendicular to line l,so the slope for line m is -1/2( the product of the slope of two perpendicualr lines is always -1).We also know that line m goes through the point(0,0),by plugging this point to slope-intercept form(y=kx+b),we could easy get the equation for line m,which is y=-1/2x
如果你要考SAT的话就应该能看懂吧 o(∩_∩)o
Here's why:
According to the graph,we know that the equation for line l is y=2x.By given that line m is perpendicular to line l,so the slope for line m is -1/2( the product of the slope of two perpendicualr lines is always -1).We also know that line m goes through the point(0,0),by plugging this point to slope-intercept form(y=kx+b),we could easy get the equation for line m,which is y=-1/2x
如果你要考SAT的话就应该能看懂吧 o(∩_∩)o