Use all three methods graphing,substitution,linear combination to solve vivian l | microsoft word/excel/outlook, essay composition, math. Linear equation graphs are always straight lines, so substitution can be an easy way to draw the graph in this lesson, we'll explore how to find.
A system of equations is when we have two or more linear equations working there can be any combination: more than 2 variables can't be solved by a simple graph replace (ie substitute) that variable in the other equation(s.
Any of the methods (graphing, substitution, linear combination) learned in this unit can be used to solve a linear system of equations.
We can also use our graphing calculator to solve the systems of equations: solving systems with linear combination or elimination probably the most useful. To solve systems using substitution, follow this procedure: select one equation and solve it for one of its variables in the other equation, substitute fo.