Systems of Equations by Matrices

3) Solve the system of linear equations.

• (3, 1, -5)

• (-3, 1, -1)

• no solution

• infinitely many solutions

5x + 8y = -12
3x + 5y = -7

• (1, -10)

• No solution

• (-4, 1)

• (1, 10)

Solve the system given:
3x - y = 7
2x + y = 3

• (-1,2)

• (5,4)

• (4,5)

• (2,-1)

Solve the system given:
4x + y = 0
x + y = -3

• (1,-4)

• (4,-1)

• (10,-1)

• (5,6)

Solve :
  2x + y = 12
 -3x + y =  2

• (-2, 8)

• (2, 8)

• (2, -8)

• (12, 2)

Solve :
 3x + 4y = 52
 5x + y = 30

• (4, 10)

• (52, 30)

• (-52, 30)

• (-4, 10)

Solve:
  x - y = 11
2x + y = 19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

The school that Stefan goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 senior citizen tickets and 1 child ticket for a total of $38. The school took in $52 on the second day by selling 3 senior citizen tickets and 2 child tickets. Which equations represents the system that could be used?

• 1s + 3c = 38
  2s + 3c = 52

• 3s + 1c = 38
  3s + 2c = 52

• s + c = 38
  s + c = 52

• 3s + 3c = 38
  1s + 2c = 52

What is the solution?

• One Solution

• No solution

• Infinitely Many Solutions

• (0, -1.5)

In Matrix R (pictured) what element is in the second row, third column?

• 8

• 9.01

• 6

• 1