Graphing Linear Equations
Rise over run.
What is slope?
System of equations
Two or more equations with one solution.
What are "per" and "of"?
When either rise or run are negative.
When is slope negative?
The point where two lines cross.
Where is the solution for two equations on a graph?
The variable that often means time.
What is x?
y = mx + b
What is slope-intercept form?
Plugging one equation into another so that you can find their solution.
What is elimination?
The variable that often means "total amount of money".
What is y?
What is the y-intercept?
Adding two equations together so that one variable cancels out and you can solve for the other variable.
What is elimination?
A coefficient that often means amount of money paid in an amount of time.
What is m?
Infinitely many solutions
How many solutions does a straight line have?
Plug the solution back into the equation.
How do you know your solution is correct?
Data plans, car payment options, different mortgages, and different rent rates.
What are some examples of things that systems of equations allow you to compare?