System Of Equations
Megan Fietz
What is a system of equations?
A system of equations is a set of two equations with a unknown x and y. Solving the two equations will give you a intersection point.
Graphing
The best time to use graphing is when you have two equations that are both in slope intercept form. For example, y=2x+3 and y=-2x-3.
Equations
This is how you solve for graphing.
Graph
This graph is of my two equations.
Substitution
The best time to use substitution is when one equation is in slope intercept form and the other in any other form. For example, y=2x-4 and 3x+2y=4.
Substitution
Elimination
The best time to use elimination is when both equations are in the same form and have one variable in common. For example, 2x+5y=10 and -2x-3y=-14.
Elimination
Write a System
You write a system when there is a word problem and you have to figure it out. You have to find what your equation is first and then figure our the coordinates.
Word Problem
In a word problem you have to figure out the two equations you are going to be using.
Infinitely Many
Infinitely many is when the are an infinite amount of answers to a equation.