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SAT官方每日一题数学(计算)9.18

2017年09月18日13:41 来源:小站整理
参与(4) 阅读(1118)
摘要:本月SAT每日一题新鲜放送中,趁热享用效果更佳,后期要跟着节奏持之以恒训练哦。

Mathematics>Standard Multiple Choice

难易程度:简单


Line l is graphed in the xy-plane. If an equation for the line l is 6y-3x =5, which of the following statements is true?

A The X-intercept of line l is and the y-intercept is SAT官方每日一题数学(计算)9.18图1

B The X-intercept of line l is SAT官方每日一题数学(计算)9.18图2 and the y-intercept is SAT官方每日一题数学(计算)9.18图3

C line l has a slope of 2

D line l has a slope of SAT官方每日一题数学(计算)9.18图4

SAT官方每日一题数学(计算)9.18图5

Answer B

EXPLANATION

Choice B is correct. Because the x‑intercept of the line is where the line crosses the x-axis, the x-intercept can be found by substituting 0 for y and solving for x.

6(0)-3x=5

-3x=5

X=SAT官方每日一题数学(计算)9.18图6

Because the y-intercept of the line is where the line crosses the y-axis, the y‑intercept can be found by substituting 0 for x and solving for y.

6y-3(0)=5

6y=5

Y=SAT官方每日一题数学(计算)9.18图7

The y‑intercept is therefore located at the point (0,SAT官方每日一题数学(计算)9.18图8), which can also be described by stating that the y-intercept is SAT官方每日一题数学(计算)9.18图9.

Therefore, the x-intercept of line l is SAT官方每日一题数学(计算)9.18图10 and the y-intercept is SAT官方每日一题数学(计算)9.18图11 .

SAT官方每日一题数学(计算)9.18图12


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