Linear Systems of Equations

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

• (-1, 4)
• (1, -4)
• (-4, 1)
• (4, -1)

Tags

CCSS.8.EE.C.8B

Solve the system of equations by substitution.
5x - 4y = -15
y = -4x - 12

• (3, 0)
• (-3, 0)
• (3, 24)
• (-3, 24)

Find the slope of the line given by the equation 6x - 5y = 15.

• -5/6
• 5/6
• 6/5
• -6/5

Solve the system of equations by elimination.
-x + y = -13
-8x - 4y = -8 

• (5, 8)
• (5, -8)
• (-5, -18)
• (-5, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Write the slope-intercept form of the equation of the line through the point
(-3, 5) with a slope of -8/3.

• y = (-8/3)x - 3
• y = (-8/3)x + 3
• y = (-8/3)x + 13
• y = (-8/3)x - 13

Which of the following are ways to solve systems of equations? 

• Graphing
• Substitution
• Elimination
• All of the above

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y.
y = 2/3x - 2
y = -x + 3

• (0,3)
• (0,-3)
• (3,0)
• (-3,0)

Solve the system by elimination. 
−4x − 4y = 0
4x + 4y = 0 

• (−6, −4) 
• Infinite number of solutions  
• (−6, 10) 
• (6, 4) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3)  x-y=11
      2x+y=19

• (10,-1)
• (-1,10)
• (-1,-10)
• (-10,-1)

1)  -4x-2y=-12
      4x+8y=-24

• (6,-6)
• (-6,6)
• (6,6)
• (-6,-6)