sat测验差官网站默读一题短简，当今是SAT1数学隔开。Read the following SAT test question, then click on a button to select your answer. What is the equation of the line parallel to the x-axis and four units above the x-axis? A.= –4 B.= 4 C. –4 D.= 0 E.= 4 Correct Answer: E Here's Why: A line that is parallel to the x-axis and four units above the x-axis is the vertical translation of the x-axis four units upward. Since the x-axis is a horizontal line and has equation y = 0, it follows that the line parallel to the x-axis and four units above the x-axis has equation y = 4. Difficulty: Easy Question Type: Standard Multiple Choice
