Interpreting Line of Best Fit

Interpreting Line of Best Fit

8th Grade

17 Qs

quiz-placeholder

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Interpreting Line of Best Fit

Interpreting Line of Best Fit

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

Anthony Clark

FREE Resource

17 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Describe the association, if any, as linear or nonlinear.

Linear

Non-linear

No Association

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the following is the equation of the line of best fit? Use points (40, 15) and (80, 30) to help you find the slope.

y = 0. 625x + 0

y = 0.375x + 10

y = 0.52x + 0

y = 0.375x + 0

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the following is the equation of the line of best fit? Use points (2, 6) and (4, 1) to help you find the slope.

y = 2.5x + 11

y = -2.5x + 11

y = -3x + 10

y = -2x + 11

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The y-intercept of this line is 11. This means Mia will make about 11 mistakes if she practices for ______ hours.

0

1

2

3

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The slope of this line is -2.5. This means Mia will make about ______ fewer mistakes each hour she practices.

1

2.5

2

5

3

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The y-intercept of this line is 40. This means that if a student doesn't study, they will receive a 40.

True

False

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The equation of this line of best fit is y = -75x + 4500.

Predict how many text messages a person who is 55 years old would send. (HINT: PLUG IN 55 for x into the equation)

375

400

425

450

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