Math 100A (Lutz) - Quiz #14
Name:
11/30/12
Directions: This quiz has 1 question, for a total of 10 points. Solve each problem carefully. You must
show ALL of your work in order to earn full credit.
1. (10 points) Solve each of the following systems of linear equations using the indicated method. If you
find that there is exactly one solution, verify that it is a solution to the system.
(a) Using the elimination method:
2x + 3y =10
−3x + 4y =2
(b) Using the substitution method:
−4x + y = − 1
−8x + 4y =20