Lesson 4.3: Use Linear Models to Make Predictions

Presentation

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Mathematics

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8th Grade

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Practice Problem

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Medium

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CCSS

HSF-LE.A.1B, HSS.ID.B.5, 8.F.B.4

Standards-aligned

Reed Carbone

Used 43+ times

FREE Resource

8 Slides • 6 Questions

Lesson 4.3

Use Linear Models to Make Predictions

Some text here about the topic of discussion

Definitions:

Trend Line: A trend line is a line that loosely connects the points on a scatter plot. The closer the dots are to the line, the stronger the trend. The further away, the weaker the trend.

Slope Intercept Form: Slope Intercept Form is a formula,

Y = mx + b

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

Describe the trend line

Strong Positive Association

Strong Negative Association

Weak Positive Association

Weak Negative Association

Multiple Choice

Describe the trend line

Strong Positive Association

Strong Negative Association

Weak Positive Association

Weak Negative Association

Ex: Find the slope and Y-Intercept of the line:

Multiple Choice

What is the y-intercept?

-2

-1

Multiple Choice

Approximately what is the local index in 1906

Multiple Choice

What will y equal when x equals 2?

y = 8

y = -9

y = 3

y = 2

What is the equation of the line?

Multiple Choice

This line has slope - $\frac{4}{5}$ and y intercept of 3. What is the equation of the line?

$-\frac{4}{5}=\ 3x\ +\ b$

$y\ =\ -\frac{4}{5}x\ +\ 3$

$y\ =\ 3x\ -\ \frac{4}{5}$

$3\ =\ mx\ -\ \frac{4}{5}$

Write an equation to approximate the trend line.
What can we expect the temperature to be when the sales are $1,000?

Conclusion: Write two complete sentences about what you learned.

Lesson 4.3

Use Linear Models to Make Predictions

Some text here about the topic of discussion

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