sat考试真题 数学篇

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sat考试真题数学篇

今天的sat考试资讯，小编为考生们准备的是一道sat数学考试题目。正积极准备sat数学的小伙伴儿，建议看一看，并试着答一答，相信一定会给您带来某种程度上的帮助!

Mathematics>Standard Multiple Choice

Read the following sat test question and thenclick on a button to select your answer.

Which of the following equations represents a line inthe x y-plane with an x-intercept (-2,0) and a slopeof 4?

A.y=4x+8

B.y=-4x+8

C.y=4x-2

D.y=-4x-2

温馨提示：各sat考生在看过上述sat数学考试题目之后，自己分析解答，再看相应的sat数学答案解析，会更有效哦!

答案：A

解析：

Option A is correct. If the slope of the line is 4, then an equation for it would be in the form y=4x+b. Then, substituting the x- and

y-coordinates of the given point to satisfy the equation yields 0=4(-2)+b. Solving for b yields b=8, so an equation that represents the given conditions is y=4x+8.