What is a line of best fit used for?

To make it look like you know what you are doing

Select the statement that best describes the line.

The line is NOT a line of best fit because it does not go through the middle of the data set.

The line is the line of best fit.

The line is NOT a line of best fit because it does not pass through two points.

The line is NOT a line of best fit because it does not go through the origin.

Which of the following could be the equation of the trend line for this graph?

y = − 3 x + 12 y=-3x+12 y = − 3 x + 1 2

y = 10 x − 15 y=10x\ -\ 15 y = 1 0 x − 1 5

y = 1 2 x + 11 y=\frac{1}{2}x+11 y = 2 1 x + 1 1

y = − 4 3 x y=-\frac{4}{3}x y = − 3 4 x

There is no trend line because there is no association

Which equation could be a trend line for this graph?

y = − 2 x + 5 y=-2x+5 y = − 2 x + 5

There is no trend line because there is no association

Functions and Scatterplots

8th Grade

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Quiz

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Mathematics

•

8th Grade

•

Practice Problem

•

Medium

•

CCSS

8.EE.B.5, 8.F.A.1, 8.F.A.3

+12

Standards-aligned

Javelo Jones

Used 7+ times

FREE Resource

26 questions

Show all answers

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which scatter plot could have a trend line whose equation is y = x + 15?

Tags

CCSS.HSF.LE.B.5

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Estimate the y-value when the x is 10?

Tags

CCSS.HSF.IF.A.2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the relation a function? Why.

Yes, because the x-value 11 has two y-values pair with it.

Yes, because each x-value has only one y-value paired with it.

No, because the x-value 11 has two y-values pair with it.

No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which set of values is a function?

(9,5) (10,5) (9,-5) (10,-5)

(3,4) (4,-3) (7,4) (3, 8)

(6,-5) (7, -3) (8, -1) (9, 1)

(2, -2) (5, 9) (5, -7) (1, 4)

Tags

CCSS.8.F.A.1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Is this table a function or not a function?

Function

Not a Function

Tags

CCSS.8.F.A.1

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Function

Not a Function

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSF.IF.B.4

CCSS.HSF.IF.B.5

CCSS.HSF.IF.C.7

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which scatterplot suggests a linear relationship between x and y?

Tags

CCSS.8.F.A.3

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Which scatter plot could have a trend line whose equation is y = x + 15?

Estimate the y-value when the x is 10?

Is the relation a function? Why.

Which set of values is a function?

Is this table a function or not a function?

Which scatterplot suggests a linear relationship between x and y?

Which scatterplot does NOT suggest a linear relationship between x and y?

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