Download Algebra Quiz ~ Chapter 7.1-7.4

Algebra Practice Quiz 7.1-7.4
Name:___________________________________Date:_________________Hour:__________
Solve the linear system by graphing.
1. x – y = 3
x + y = -2
2. x + 2y = 2
-6x + 3y = -6
Solve the linear system using substitution.
3. y = 9 – 2x
7x – y = 6
4.
5y + x = 12
y – x = -12
For problems 5-8, solve the linear system by elimination.
5. 6𝑥 − 𝑦 = 10
5𝑥 − 𝑦 = 15
6. −8𝑦 + 4𝑥 = 42
8𝑥 − 𝑦 = 32
7. 6𝑥 + 𝑦 = 10
3𝑥 + 11𝑦 = 4
Type equation here.
9. Two families go to a baseball game. One family purchases two adult tickets and three youth tickets for $50.
Another family purchases three adult tickets and two youth tickets for $35. Let x represent the cost (in
dollars) of one adult ticket, and let y represent the cost (in dollars) of one youth ticket.
(a) Write a linear system that represents this situation.
(b) Solve the linear system to find the cost of one adult ticket and one youth ticket.
(c) How much would it cost a family of two adults and five youths to attend the game?