Section 6.1 – Section 6.3 – Systems of Linear Equations – Graphs
... Systems of linear equations may be solved graphically or algebraically. When solving algebraically, we can use either the substitution method or elimination method. Substitution Method 1. Solve one equation for one variable. 2. Substitute this expression into the other equation for that variable sol ...
... Systems of linear equations may be solved graphically or algebraically. When solving algebraically, we can use either the substitution method or elimination method. Substitution Method 1. Solve one equation for one variable. 2. Substitute this expression into the other equation for that variable sol ...
Solving Linear Systems by Linear Combinations
... case it may be easier to solve the system by linear combinations. A linear combination of two equations is an equation obtained by (1) multiplying one or both equations by a constant if necessary and (2) adding the resulting equations. ...
... case it may be easier to solve the system by linear combinations. A linear combination of two equations is an equation obtained by (1) multiplying one or both equations by a constant if necessary and (2) adding the resulting equations. ...
Section 8.5 Trigonometric Equations ) ) )
... is defined. We call these identities. We have verified many identities throughout this chapter. Other trigonometric equations are only true for specific values of the variable (or no values at all.) These are called conditional trigonometric equations or simply trigonometric equations. Because of th ...
... is defined. We call these identities. We have verified many identities throughout this chapter. Other trigonometric equations are only true for specific values of the variable (or no values at all.) These are called conditional trigonometric equations or simply trigonometric equations. Because of th ...
