Precalc: Cramer's Rule Pre-Test

Using Cramer's rule, what is the value of x in the solution to the system of linear equations below? -1/2x +3y=-4 -x-y=-1

2

Which system of linear equations can be solved using the information below?

2x-3y=20 12x+8y=-192

Using Cramer's Rule, what is the value of x in the solution to the system of linear equations below? 5x-4=3y 2x+32=4y

8

Which determinants can be used to solve for x and y in the system of linear equations below? -3x+2y=-9 4x-15y=-25

A.

Using Cramer's Rule, what is the value of y in the solution to the system of linear equations below?

B. |9 5 -3 -4|/-42 = 1/2

Using Cramer's Rule, what is the value of x in the solution to the system of linear equations below?

D. There are infinite solutions to the system

Based on the information below, what are the values of x and y of the solution to the system of equations used to create the information? |A|= [4, -6, 8, -2]

x=2, y=-5

Given |12 -13 17 -22] [xy] = [7 -51] what is |Ay|?

|12 7 17 -51|

Which equation can be used to determine x-value of the solution in the system of linear equations below?

|148 14 246 5| _______________________ = 52 |-2 14 3 5|

What is |Ax| in the system below? 4x-y=-3 -2x+y=5

|4 -1 -2 1|