7
QuizMultiple Choice
Using Equations to Represent Trend Lines
Question 7 • *WHS Pre-Algebra - MA3119 B-CR
The enrollment at East Valley High School over a six-year period is displayed in the scatterplot.Student Enrollment at East Valley High SchoolWhich is the equation of the line of best-fit for this scatterplot?
Answer
A
y = negative StartFraction 81 Over 2 EndFraction x + StartFraction 165,389 Over 2 EndFraction
B
y = negative StartFraction 2 Over 81 EndFraction x + StartFraction 111,748 Over 81 EndFraction
C
y = StartFraction 2 Over 81 EndFraction x + StartFraction 103,712 Over 81 EndFraction
D
y = StartFraction 81 Over 2 EndFraction x minus StartFraction 160,069 Over 2 EndFraction