Practical Problem: The Height of a Stack of Newspapers
Using the slope-intercept form of equation, a practical problem involving the rate of growth of a stack of newspapers is calculated.
Both Equations in a System Contain the Same Variable
Solving a system of equations using the substitution method when both equations contain the same variable.
Solving Systems with Substitution
An introduction to using the algebraic method of substitution to solve a system of equations in which one of the equations is not in slope-intercept form.
Practical Problem: Predicting the Costs for a Business
Using a linear equation to calculate the cost of building thirty tables to sell.
Applying the Slope Formula to a Graph
Using the slope formula to plot a graph.
Practical Problem: Predicting the Earnings for a Business
Using a linear equation to project earnings for a business.
Slope-intercept Form: y = mx b
The slope-intercept form: y = mx b. Problems about rate of change involving two variables are solved using the slope-intercept form of equation.
When the Elimination Method is Easiest
How to decide whether substitution or elimination is the better method for solving a system of equations when both equations are in the same form and neither has been solved for a variable.
Addition Property of Equality, The
The addition property of equality is explained and demonstrated.
Horizontal and Vertical Lines in Slope-intercept Form
Writing horizontal and vertical line equations in slope-intercept form.