直线2y=6x+4的斜率和在x轴、y轴上的截距分别是多少?

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问题直线2y=6x+4的斜率和在x轴、y轴上的截距分别是多少?

选项

答案必须把直线方程简化为y=kx+b的形式，y=3x+2，这样斜率为3。y轴上的截距为直线与y轴交点的纵坐标，直线与x轴的交点横坐标必然为0，把x=0代入上面的方程，得到y-intercept为2；x轴上的截距为直线与x轴交点的横坐标，直线与x轴的交点纵坐标必然为0。把y=0代入上面的方程，得到x-intercept为(-2/3)。

解析

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直线2y=6x+4的斜率和在x轴、y轴上的截距分别是多少?

GRE QUANTITATIVE

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IntheMiddleAgesstudents______.Themainideaofparagraph3isthat______.

Believeornot,opticalillusion(错觉)cancuthighwaycrashes.Japanisacaseinpoint.Ithasreducedautomobilecrashestosome

Outofallthestudentswhoenrollinamassiveopenonlinecourse(MOOC),onlyabout5percentcompletethecourseandreceive

Afterworkingfortwentyhourswithoutanyrest,thedoctorswere______.

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