To help students apply the math in this chapter to real-life applications, we've included three Internet Activities. Students investigate first job opportunities in Taking the Plunge, use the Great Pyramids to Explore Applications of Slope, and record their heart rate to Connect Slope and Linear Functions.
These teaching notes can be printed for quick referencing.
In this chapter students will:
- build on their knowledge of equations by learning to graph and write linear equations
- calculate rate of change
- measure direct variation
- learn the slope-intercept form of a linear equation, Ax + By = C
- write equations of lines
- apply lines to scatter plots
- use the x-intercept
- learn about the relationship between the equations of parallel and perpendicular lines
Prerequisite Skills
- Graphing ordered pairs
- Understanding dependent and independent variables
- Understanding vertical and horizontal
- Isolating a variable
- Graphing slope
- Drawing a line through a point with a given slope
- Modeling equations
- Calculating slope
- Understanding trend lines
- Substituting numbers for variables in equations
- Solving equations
- Understanding the terms parallel and perpendicular
- Isolating a variable
- Graphing lines
Key Terms
- Ax + By = C form
- break-even point
- constant of variation
- correlation coefficient
- direct variation
- linear equation
- linear function
- line of best fit
- parallel lines
- perpendicular lines
- rate of change
- slope
- slope-intercept form
- x-intercept
- y-intercept