The slope of the line below is 2. Which of the following is the point-slope form of the line?
10
10
(1,-1)
10
-10
A. y + 1 = -2(x-1)
B. y - 1 = 2(x + 1)
C. y-1 = -2(x + 1)
D. y + 1 = 2(x - 1)
CA

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?