Systems of Equations Quiz Review

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

If the solution is infinitely many the lines will ________?

• intersect at exactly one point
• be parallel
• overlap each other
• never exist

Steffen graphed two lines in order to find the solution to a given system of equations.
What is the solution?

• (-3,-8)
• (-8,-3)
• (3,-8)
• (8,3)

Warm up: #3

Match the solution to the system of equations.

• (2, -1)

• 
• (1, 4)

• 
• (-4, -1)

• 
• (-2, -1)

• 

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

• (-2, -1)

• (1, -2)

• (-2, 1)

• (-1, -2)

Solve the system using substitution.
y = 6x - 5
6x - 7y = -1

• (1,1)
• (-1, -11)
• No Solution
• Infinitely many solutions

Solve the system using substitution.
y = -3x + 9
-8x + 5y = -1

• (3,2)
• (2,3)
• No Solution
• Infinitely Many Solutions

Solve the system using substitution.
16x + 2y = 2
y = -8x - 1

• (2,3)
• (-3,7)
• No Solution
• Infinitely Many Solutions

Solve by elimination:
3x+7y=23

-3x-7y=-17

• No solution
• ARN
• (-3,3)
• (3,3)