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## 9.2 Solving Linear Systems by Substitution

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**9.2 Solving Linear Systems**by Substitution Warm-up: State whether the given ordered pair is a solution to the system. 1. 2. 3.**3x + y = 5**2x - y = 10**2x + 6y = 15**x = 2y**x + 2y = 4**-x + y = -7**3x - y = 5**2x + y = 0**-2a + b = 7 2m + 5n = 14**3a + b = -8 2m - 3n = 6**A quilt maker sews both large and small quilts. A large**quilt requires 8 yards of fabric and a small quilt requires 3 yards. How many of each size can she make if she uses a total of 90 yards of fabric to make 15 quilts?**Tickets for the school play are $5 in advance and $8 at**the door. 55 tickets were sold with sales totaling $320. How many tickets were sold in advance and how many were sold at the door?**Homework**Pg. 419 Written Exercises #1 - 17 odd Challenge Problems: #2 - 12 even