Systems of equations

If a system of equations has no solution, what does the graph look like? 

• intersecting lines
• parallel lines
• skew lines
• intersecting lines

What is the solution?

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

How many solutions does this system of equations have?

• One Solution
• No solution
• Infinitely Many Solutions
• Two Solutions

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

• Parallel lines
• the same line 
• Intersecting lines

What is the Solution to this system?

• (2,-2)
• (-2,2)
• All Real Numbers
• No Solution

Solve by elimination: 4x+9y=28 -4x-y=-28

You must show your work.

• (-7,0)
• (6,0)
• (-6,0)
• (7,0)

x - 4y = -4 x + 2y = 8

You must show your work.

• (2,2)
• (4,2)
• (2,-2)
• (4,-2)

What is the value of the y-coordinate of the solution to the system of equations  x-2y=1 x+4y=7 

You must show your work.

• 1
• -1
• 3
• 4

^{What is the solution?}

• 1

• -2

• (1, 2)

• (1, -1)

Solve for x and y by using the substitution method.

You must show your work.

3x + 2y = 16

y = -7x + 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)