Question:
Solving Systems of Linear Equations of Books and Magazines
Systems of linear equations
Books and magazines. At Gwen's garage sale, all books were one price, and all magazines were another price.
Harriet bought four books and three magazines for $1.45,and June bought two books and five magazines for $1.25.
What was the price of a book and what was the price of a magazine?
Solving by Substitution
Solve each system by substitution. Determine whether the equations are independent, dependent, or inconsistent.
y=-3x+19
y=2x-1
y=-4x-7
y=3x
y=x+4
3y-5x=6
The Addition Method
Solve each system by addition.
x-2y=-1
-x+5y=4
3x-5y=-11
x-2y=11