Math Lesson 3.8 Notebook Worksheet With Answers - 8th Grade, 2015
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28thMathLesson3.8.notebook
November 16, 2015
Bell Ringer
Bell Ringer Answers
1) Solve the system by graphing:
1) 2) 1 soluon, (‐2,0)
y = 2x
y – 4 = 2x
2) Does the system have 1 soluon, no soluon, or infinitely many
soluons? If it has a soluon, find it.
x + y = ‐2
y = x + 2
Nov 28:46 AM
Nov 28:47 AM
Sec. 3.7 HW Answers Pg. 239
Lesson 3.8 Solve Systems of Equaons Algebraically
Nov 28:47 AM
Nov 28:47 AM
Example: Solve the systems algebraically:
Substuon
: when you substute on equaon into the other to find
a) y = 2x + 1 b) 2x + 5y = 44
the soluon to a system of equaons.
Example: Solve the systems algebraically:
3x + 4y = 26 y = 6x – 4
a) y = x + 4 b) y = x ‐ 6
y = 2 y = 3x
Nov 28:48 AM
Nov 28:48 AM
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