2016年1月13日SAT官方逐日一題
標題範例:Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
In the xy-plane, line l passes through the points (a,0) and (0,2a), where a>1. What is the slope of line l?
(A) -2
(B) -1/2
(C) 2
(D) -2a
(E) 2a
謎底:A
【剖析】