System of Equations: determining the values of two or more variables.
Here’s a link to web-based software that will calculate a system of equations:
However, I would recommend using a TI graphing calculator’s capabilities for this. Not only is the calculator very capable, many students should have access to one (hopefully through school).
Solve y=3x+1 and y=-x+5 by graphing the equations and finding out where they intersect.
The Smith family is trying to decide between installing cable or satellite. Cable has a one-time installation charge of $45 and then $34 charge per month. Satellite has a $185 charge for installation and then ongoing costs of $20 per month. What would you advise they do?