Substitution and elimination exit ticket

Solve the system of Equation (x,y)
x + 3y = 18
 –x –4y = –25 

• (3,7)
• (-3,7)
• (7,-3)
• (-3,-7)

Solve the system of Equation (x,y)
3x + y = –14
–2x – y = 9

• (-5,1)
• (5,-1)
• (1,4)
• (-1,4)

Solve the following systems of equations using substitution:

5x - 2y = 3

y = 2x

• (6, 3)

• (1, 2)

• (3, 6)

• (2, 1)

Answer explanation

When solving a system of equations algebraically, which statement results in infinite solutions?

• 4 = 7

• 2 = 2

• -3 = 3

• all of the above

Answer explanation

You will be left with an identity (something true) when trying to solve a system of equations, if there are infinitely many solutions.

• (2, 0)

• (-2, 8)

• Infinitely many solutions. 

• (8, -12)

What is the best way to solve this system?

y = ¹/₄ x + 2

y = ⁷/₄ x - 4

• Elimination

• Substituion

• Graphing

• Pairing

What is the best method to solve this system of equations?

5x - 4y = 11

5x + 4y = -14

• Graphing

• Substitution

• Elimination

• Connection

What is the best method for solving this system of equations?

• Graphing

• Googling

• Elimination

• Substitution