Solving Systems of Linear Equations

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

• (0,3)
• (0,-3)
• (3,0)
• (-3,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

If a system of equations has no solution, what does the graph look like? 

• intersecting lines
• parallel lines
• skew lines
• intersecting lines

solve by substitution: y=3x+14
y=-4x

• y=3
• y=1
• y=2
• y=4

what is the first step in the substitution method?

• Step 2
• isolate one of the variables in one of the equations
• substitute in the value of the isolated variable into the other equation

which is a solution to this system?

• (1,2)
• (-1,2)
• (-5,-7)
• (0,0)

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

Tags

CCSS.8.EE.C.8B

A linear system has no solution when the graphs of the equations are parallel.

• TRUE
• FALSE

A linear system has infinitely many solutions when the graphs of the equations are _____________.

• not identical
• parallel
• identical
• one point

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

Tags

CCSS.8.EE.C.8B