Mathematics (2019) Grade(s): 8

MA19.8.20

Use a linear model of a real-world situation to solve problems and make predictions.

Unpacked Content

Knowledge

Students know:
  • strategies for determining slope and y-intercept of a linear model.

Skills

Students are able to:
  • Represent contextual and mathematical situations involving bivariate measurement data with a linear relationship algebraically and graphically.
  • Use mathematical vocabulary to describe and interpret slopes and y-intercepts of lines which represent contextual situations involving bivariate data.
  • Make predictions about unobserved data using the equation and graph.

Understanding

Students understand that:
  • Modeling bivariate data with scatter plots and fitting a straight line to the data can aid in interpretation of the data and predictions about unobserved data.

Vocabulary

  • Linear model
  • Bivariate measurement data
  • Slope
  • y-intercept
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