Videos for Unit 3

5-5 Lesson: Using|Direct Variation

a direct variation to describe a situation
a proportion as an equation of direct variation
a proportion to solve a direct variation problem

5-6 Lesson: Writing|Inverse Variation

the equation of an inverse variation
inverse variations
direct or inverse variation
whether real-world situations involve direct or inverse variation

Linear Equations and Their Graphs

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6-1 Lesson: Finding|Rate of Change and Slope

slope using rise/run
the rate of change using a table
the rate of change using a graph
slope using coordinates
the slope of horizontal or vertical lines

6-2 Lesson: Graphing|Slope-Intercept Form

a linear equation using slope-intercept form
an equation given the slope/y-interceptan equation from a graph

6-4 Lesson: Finding|Standard Form

the x- and y-intercepts from an equation in standard form
linear equations using intercepts

6-5 Lesson: Graphing|Point-Slope Form and Writing Linear Equations

linear equations using point-slope form
an equation in point-slope form using a point and the slope
an equation in point-slope form from a graph
a linear equation using a table
whether a relationship shown by data is linear

6-6 Lesson: Determining|Parallel and Perpendicular Lines

whether lines are parallel
equations of parallel lines
whether lines are perpendicular
equations of perpendicular lines

6-7 Lesson: Writing|Scatter Plots and Equations of Lines

an equation for a trend line
an equation for a line of best fit

6-3 Lesson: Modeling|Applying Linear Functions

real-world situations using linear equations linear graphs

Systems of Equations and Inequalities

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7-1 Lesson: Solving|Solving Systems by Graphing

interpreting a system of linear equations by graphing
solutions of systems of linear equations
special types of linear systems

7-2 Lesson: Solving|Solving Systems Using Substitution

linear systems using substitution
linear systems for real-world situations using substitution