The equation for Louis's purchase is: [tex]x+y=8[/tex]
The equation for Kate's purchase is: [tex]y+z=9[/tex]
The equation for Biff's purchase is: [tex]x+y+z=13.50[/tex]
Step-by-step explanation:
First of all we have to define variables for each item involved in the purchase
Let x represent burger
y represent soda
z be the slice of pizza
Then
"Louis bought a burger and soda for $8"
[tex]x+y=8[/tex]
"Kate purchased a slice of pizza and soda for $9"
[tex]y+z=9[/tex]
"Biff purchased a burger, a slice of pizza and a soda for $13.50"
[tex]x+y+z=13.50[/tex]
The equation for Louis's purchase is: [tex]x+y=8[/tex]
The equation for Kate's purchase is: [tex]y+z=9[/tex]
The equation for Biff's purchase is: [tex]x+y+z=13.50[/tex]
Keywords: Linear Equations, Variables
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