Quizizz Review for Lessons 4-1, 4-2, and 4-3

Solve by any method.

 $y=-2x-2$  
 $y=3x-7$  

 $x+y=-5$  
 $y=\frac{1}{2}x-2$  
Solve by any method.

 Write an equation in slope-intercept form that would have infinitely many solutions in a system of equations with $5x-2y=8$ 

Caterer A charges $15 per person and $100 to set up tables. Caterer B charges $20 per person and $50 to set up tables. For what number of guests will the cost of Caterer A be the same as the cost of Caterer B?

Caterer A charges $15 per person and $100 to set up tables. Caterer B charges $20 per person and $50 to set up tables. For a certain number of guests, the cost for both companies is the same. What is that cost?

 Use substitution to determine whether the system below has no solutions, infinitely many solutions, or one solution. $15x+5y=20$  

 $y=8-3x$ 

• No solutions

• Infinitely many solutions

• One solution

Marcus buys 2 lb of grapefruit and 3 lb of oranges for $7.20. Jalah buys 4 lb of grapefruit and 2 lb of oranges for $8.80. Let x represent the price per pound for grapefruit, and let y represent the price per pound for oranges. What is the price per pound for oranges?