Systems of equations

Solve the system of equations.
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

This system has _____ solutions.  Hint:  These lines are parallel.

• no
• 1
• 2
• Infinitely many

Does the system have one, none or infinite solutions?
8x + 4y = 12
y = -2x + 3

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

Tags

CCSS.8.EE.C.8B

y = x - 2
-2x + 3y = -1

• (5, -3)
• (5, 3)
• (-5, -3)
• (-5, 3)

Solve the following system. 
y= -1/3x + 4
y= 2/3x +1

• Infinite number of solutions
• (3, 3)
• (3, -3)
• (-3, 3)

Solve the following system by graphing.  What is the solution?
y= -1/4x + 3
y= 3/4x -1

• (-4, 2)
• (4, 2)
• (2, -4)
• (2, 4)

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

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)

Tags

CCSS.8.EE.C.8B

solve for x and y
5x + 3y = 7
y = 4

• (4,1)
• (4,-1)
• (1,4)
• (-1,4)

Tags

CCSS.HSA.REI.C.9

Solve the system by graphing:
y = 6x - 4
y = -x + 3

• (1, 2)
• (2, 1)
• (4, 5)
• (2, 4)

Tags

CCSS.8.EE.C.8B