Solving Systems by Graphing through Substitution and Elimination

Solve the system of equations by substitution.
y = -4x + 5
y =  3x - 16

• (-3, -25)
• (3,-7)
• (11, 17)
• (21, 47)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations by substitution.
y = 8x + 12
-5x +4y = 21

• (1, -4)
• (1, 20)
• (-1, 20)
• (-1, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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

• -5/6
• 5/6
• 6/5
• -6/5

Tags

CCSS.8.EE.B.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

Solve the system of equations by elimination.
-6x - 2y = -46
3x + y = 23

• (0, 23)
• (7.6, 0)
• Infinite number of solutions
• No solution

Tags

CCSS.8.EE.C.8B

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

Find the slope of the line through the points:
(-15, 11)    (-8, -17)

• -6/23
• 6/7
• 4
• -4

Tags

CCSS.8.EE.B.5

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