AnswersCV Q4 MJ Math Gr 8 PreAlg 1205070Using Equations to Represent Trend Lines

Using Equations to Represent Trend Lines Answers

8 verified answers1 views
1
Free Preview

What is the slope of a trend line that passes through the points (–3, 3) and (18, 26)?

A
StartFraction 15 Over 29 EndFraction
Option A
B
StartFraction 21 Over 23 EndFraction
Option B
C
StartFraction 23 Over 21 EndFraction
Option C
D
StartFraction 29 Over 15 EndFraction
Option D
2
Free Preview

Question is locked

Question illustration
Answer not available
3

Question is locked

Question illustration
Answer not available
4

What is the slope of a trend line that passes through the points (1, 3) and (10, 25)?

A
Negative StartFraction 15 Over 2 EndFraction
Option A
B
Negative one-half
Option B
C
StartFraction 22 Over 9 EndFraction
Option C
D
StartFraction 24 Over 7 EndFraction
Option D
5

What is the slope of a trend line that passes through the points (5, 80) and (7, 65)?

A
Negative StartFraction 15 Over 2 EndFraction
Option A
B
Negative StartFraction 2 Over 15 EndFraction
Option B
C
StartFraction 2 Over 15 EndFraction
Option C
D
StartFraction 15 Over 2 EndFraction
Option D
6

Melanie and Tracy are each finding the equation of the trend line that fits the data in the table below. Participation in the School BandYearNumber of students201048201152201255201359Melanie uses the ordered pairs (2010, 48) and (2013, 59) to find her equation. Tracy defines x as the number of years since 2010 and uses the ordered pairs (0, 48) and (3, 59) to find her equation. How will the two girls’ equations compare?

A
They will have the same slopes and the same y-intercepts.
B
They will have the same slopes but different y-intercepts.
C
They will have different slopes but the same y-intercepts.
D
They will have different slopes and different y-intercepts.
7

Question is locked

Question illustration
Answer not available
8

Question is locked

Question illustration
Answer not available
9

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?

Question illustration
A
y = negative StartFraction 81 Over 2 EndFraction x + StartFraction 165,389 Over 2 EndFraction
Option A
B
y = negative StartFraction 2 Over 81 EndFraction x + StartFraction 111,748 Over 81 EndFraction
Option B
C
y = StartFraction 2 Over 81 EndFraction x + StartFraction 103,712 Over 81 EndFraction
Option C
D
y = StartFraction 81 Over 2 EndFraction x minus StartFraction 160,069 Over 2 EndFraction
Option D
10

Question is locked

Question illustration
Answer not available

Did you find these answers helpful?

More from this Course

Quiz
9 verified answers

Using Equations to Represent Trend Lines

Instruction
3 verified answers

Instruction

Instruction
3 verified answers

Instruction

Using Equations to Represent Trend Lines Answers…