Linear Model Equations



Videos and lessons to help Grade 8 students learn how to use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. 

For example, in a linear model for a biology experiment, interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each day is associated with an additional 1.5 cm in mature plant height.

Common Core: 8.SP.3

Suggested Learning Targets

  • I can find the slope and intercept of a linear equation in the context of bivariate
    measurement data.
  • I can interpret the meaning of the slope and intercept of a linear equation in terms
    of the situation. (For example, in a linear model for a biology experiment,
    interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each
    day is associated with an additional 1.5 cm in mature plant height
  • I can solve problems using the equation of a linear model

Related Topics:
Common Core for Grade 8

Common Core for Mathematics

More Math Lessons for Grade 8

Use linear model equations to solve problems in the context of bivariate data--1 of 3 (8.SP.3)
In this lesson you will learn how to interpret scatter plots by calculating the rate of change on the graph.



Use linear model equations to solve problems in the context of bivariate data--2 of 3 (8.SP.3)
In this lesson you will learn how to interpret scatter plots by finding the y-intercept on the graph.





Use linear model equations to solve problems in the context of bivariate data--3 of 3 (8.SP.3)
In this lesson you will learn how to interpret the equation of a linear model by calculating the y-intercept using the slope-intercept equation.



8 SP 3 Linear Models 1
This lesson teaches how to use linear models to solve problems, how to interpret the slope of a line, and how to interpret the y-intercept of a line.





Linear Modeling with Heart Rates 8.SP.3
In this common core worked example, we model the heart rate as a linear function



Linear Modeling
Scatter plots with trend lines.





Graphical Interpretation of a Scatter Plot and Line of Best Fit
This video explains how to use the graph of a scatter plot and line of best fit to make a prediction.



Scatter Plots and Lines of Regression







Writing an Equation From a Scatter Plot
In this video lesson I review the three ways to classify a data trend displayed in a scatter plot: positive correlation, negative correlation, and no correlation. Then I model how to create a scatter plot and draw a good trend line. Once the trend line is drawn, I model how to write the equation of that line.








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