Advanced Mathsmatics for Business and Social Science
MATH 227

Fall 2013
MATH227
Test 3 Review
1. Solve the system using the echelon method. Show necessary steps.
x + 2y + 3z = 9
x 2y = 4
3x + 2z = 12
2. Solve the system using the GaussJordan method. Show necessary steps.
Advanced Mathsmatics for Business and Social Science
MATH 227

Fall 2013
MATH227 t/HIW /%
Test 3 Review
1. Solve the system using the echelon method. Show necessary steps.
:3 + 23/ + 32 = 9
55' 2y = 4
3217 + 22 = 12
2. Sales the system using the GaussJordan method. how n
Advanced Mathsmatics for Business and Social Science
MATH 227

Fall 2013
MATH227
Test 2 Review Problems (Chapter 2 and 4)
1. Determine whether the three points are the vertices of a right triangle.
(4, 3), (2, 5), (1, 6)
2. Determine whether the three points are collinear.