CW- Solving Systems of Equations Practice

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

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

Solve using the most efficient method for this system.

-2y = -x + 2

3x + 4y = 3

• (1.4, -0.3)

• (3.1, 5)

• (-2.5, 3.5)

• (6.9, 1.02)

Solve the system of equations using the method that is most efficient for this system.

y = -4x + 5

y =  3x - 16

• (-3, -25)

• (3,-7)

• (11, 17)

• (21, 47)

Solve the system of equations by using the most efficient method for this system.

4x + y = 5

-3x + y = - 16

• (-3, -25)

• (3,-7)

• (11, 17)

• (21, 47)

Solve by using the most efficient method for this system:

4x+9y=28

-4x-y=-28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

Solve by elimination:

7x - 9y = 29

2y + 7x = -15

• (-4,-1)

• (-1.-4)

• (-1,4)

• (-1,6)

Solve by elimination:

7x+y=-9

-3x-y-5= 0

• No solution

• (1,8)

• (-2,-3)

• (-1,-2)

What is the solution?

• One Solution
• No solution
• Infinitely Many Solutions
• (0, -1.5)

solve by substitution:

y - 14=3x

y=-4x

• y=3

• y=1

• y= - 2

• y=4

The solution of a system of linear equations is...

• the y-intercept (b)
• the intersection of the two equations on a graph
• the second equations' answers
• the slope (m)