Equations Where Slope is the Same But y-intercept is Not
Comparing two equations with the same slope but different y-intercepts.
Finding Rate of Change From a Graphed Line
The procedure for finding rate of change from a graphed line is detailed.
System of Two Equations: A Revenue Graph and a Cost Graph
Using a system of equations to plot a business's break-even point.
Graphing the Equation F = 1.8C 32
Graphing the equation F = 1.8C 32 to convert temperatures given in Celsius to Fahrenheit.
Deciding Between Substitution and Elimination
How to decide whether substitution or elimination is the better method for solving a system of equations in which one equation has been solved for a variable.
Effect of Scale on Slope
The effect of scale on the steepness of a line's slope is illustrating by comparing graphs of interest rates at two different banks.
Changing Standard Form Equations to Slope-intercept Form
To change a linear equation from standard form to slope- intercept form, solve for y. The procedure is demonstrated several times.
Changing Scales of the x and y Axes
When and how to change the scale of an axis.
Check Answers to Both Equations in a System
It's important to check the solution against both equations in a system.
Coordinate Plane
Graphs are created on an imaginary surface called a coordinate plane, which contains vertical and horizontal number lines. Using the numbers on the axes to plot points on the plane creates a picture of the solution.