SAT数学题15.Doug's biology experiment involved timing 12 ha

SAT数学题

15.Doug's biology experiment involved timing 12 hamsters in a maze.Each hamster received at least one practice before being timed.The scatter plot above shows the time each hamster took to complete the maze and the corresponding number of practices that each hamster received.Based on the data,which of the following functions best models the relationship between t,the number of seconds to complete the maze,and p,the number of practices?
(A) t(p) = 44
(B) t(p) = p
(C) t(p) = 44p
(D) t(p) = p/44
(E) t(p)= p+ 44
cxstx 1年前 已收到2个回答 举报

uu旁观者 幼苗

共回答了21个问题采纳率:85.7% 举报

答案是A,从图表中可以看出纵轴的t值虽然有所浮动,但是大致都稳定在44左右,并不能看出和横轴p值的相关性.BCDE都是一次函数,虽然斜率表现得有大有小,但是在图标上我们看不出这样相关增长的机箱(数据点不能被归并到一根近似倾斜直线上),所以说t值不受p影响.

1年前

9

找个交流的朋友 幼苗

共回答了34个问题 举报

上面有个坐标图看到了吗,观察那些坐标点,发现它们都成离散分布在y=44 这条线的周围,所以选A。小马过河网老师解答

1年前

2
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