Q3:W9B Quiz Algebra

^{What is the solution to the system?} 

• (1,1)
• -2
• (1, 2)
• (1, -1)

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 to this system? Use Graphing.

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the following system by graphing.  What is the solution?

• (-4, 2)
• (4, 2)
• (2, -4)
• (2, 4)

If a system of linear equations has infinitely many solutions, what does this mean about the two lines? 

• Intersecting lines
• Identical line
• Parallel lines

Solve the system of equations by graphing.

• (-1, 4)

• (1, 0)

• No Solution

• (0, 2)

Solve the system of equations by graphing.

• (-3, 2)

• (-3, 6)

• (-3, -2)

• (-3, -6)

Solve the system of equations by graphing.

• No Solution

• Infinitely Many Solutions

• (-1, 1)

• (-2, -2)

Solve the system by substitution.
 
5x + 4y= −14
y =  −7x  −  15 

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

Solve by substitution:

y = -2x + 5

y = 2x - 11

• No Solution

• (0, 0)

• (3, -1)

• (4, -3)