Systems of Equations Practice Quiz

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

If a system of linear equations has one solution, what does this mean about the two lines? 

• parallel lines

• the same line 
• intersecting lines

How many solutions does this system have?

• one solution

• no solution

• infinitely many solutions

How many solutions does the system have?

• one Solution

• no solution

• infinitely many solutions

Solve the system of equations using SUBSTITUTION:

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the system of equations using SUBSTITUTION:

3x + 2y = 16

y = -7x + 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Which variable will be "eliminated" first?

5x - 4y = 11

5x + 4y = -14

• x

• y

• both

Solve the system of equations using ELIMINATION:

x - y = 11

2x + y = 19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

Solve the system of equations using ELIMINATION:

x + 9y = 8

-6x - 9y = -3

• (1,-1)
• (1,1)
• (-1,1)
• (-1,-1)

Solve the system of equations using ELIMINATION:

5x - 4y = -16

x + 2y = -6

• (-4,-1)
• (5,-1)
• (-5,-1)
• (4,1)