2017年GRE考试数学考点讲解9

　　Equation-In Terms of

　　Given a linear equation of two variables x and y, we can express x in terms of y by isolating x to the right side of the equation and y to the left.

　　Example:

　　Given the equation ax+by+c=d,we can express x in terms of y as follows:

　　1.ax=d-by-c,by subtracting by+c from both sides

　　2.x=(d-by-c)/a,by dividing both sides by a.

　　Remember:

　　All linear equations of two variables x and y can be written as ax+by+c=d, and x=(d-by-c)/a.

　　由于美国数学基础教育的难度增加导致数学考试越来越难，但新gre数学复习考点都是高中时候学到的知识点，考生不要过于紧张，把基本概念弄明白，再记住一些新版gre数学必备的词汇，那么相信新版gre数学应该没有问题。