Systems of Equations with 2 Variables

Solve for x and y
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

Solve the system of equations.
x + 2y = -3
x - y = -12

• (-9, 3)
• (-7 ,5)
• (3, 15)
• (9, 6)

Which ordered pair is the solution of the system? 

 $6x-6y=2$  

 $3x+9y=-7$  

•  $\left(\frac{2}{3},-\frac{1}{3}\right)$  

•  $\left(\frac{1}{3},\frac{2}{3}\right)$  

•  $\left(-\frac{2}{3},\frac{1}{3}\right)$  

•  $\left(-\frac{1}{3},-\frac{2}{3}\right)$  

Solve the system of equations
  4x+8y=20
-4x+2y=-30

• (-7,1)
• (2,-5)
• (-2,5)
• (7,-1)

Solve the system using elimination.
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Solve the system of linear and quadratic equations:

y = 5

y = 2x² - 16x + 29

• (6, 5) and (2, 5)

• (2, 6)

• (6, 2)

• (5, 6) and (5, 2)

Which of the following equations could be used to solve:
y = x² + 3x - 5
y = x + 3

• x² - 3x + 5 = x - 3
• x² + 3x - 5 = x + 3
• x² + 3x - 5 + x + 3 = 0
• x² + 3x - 5 = 0

Find the solution(s):
y = x² - 4x + 6
y = x + 2

• (1, 4)
• (-1, 1) and (4, 2)
• (1, 3) and (4, 6)
• (1, 4) and (3, 6)