Practice Test CP Systems

This system has _____ solutions

• no
• 1
• 2
• Infinitely many

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

What is the solution?
(Hint:  Both lines are graphed over each other)

• One Solution
• No solution
• Infinitely Many Solutions

The solution to the system is

• (-2, -8)
• (-8, -2)
• (2, -8)
• No solution

Solve: Use Substitution
8x + 4y = 12
y = -2x + 3

• (0,3)
• (3,0)
• No solution(parallel lines)
• Infinitely many solutions

Use Elimination to solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Solve: 
5x+6y= -10
3x-2y= -6

• (-2,0)
• (0,-2)
• (2,0)
• (0,2)

What is the Solution to the system?
-4x - 6y = 6
4x + 6y = -4

• no solution
• (2,0)
• (-4,0)
• (0,0)

What is the solution to the system of equations? 
y = 3x - 8
y = 4 - x

• (3,1)
• (1,3)
• (-3,1)
• (3,-1)

Solve:
y= 2x
x + y = 9

• (6, 3)
• (3, 6)
• (-3, -6)
• no solution