Solving Equations and Finding Slope

Solve by elimination:
4x+9y=28
-4x-y=-28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:
7x+y=-9

-3x-y=5

• No solution

• (1,8)

• (-2,-3)

• (-1,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What would be the first step in finding the solution with elimination?

• cross out the 3y and -3y

• cross out the 4x and x

• change all the signs of the second equation

• add 1 and -11

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Identify the solution to this system of equations.

• (4, -1)

• (-1, 4)

• (-4, 1)

• (-4, -1)

Tags

CCSS.8.EE.C.8B

What is the slope of the graph represented by the following equation?

y = ⅕x + 3

• slope = 3

• slope = ⅕

• slope = -⅕

• slope = 5

Tags

CCSS.8.EE.B.5

What is the slope in the equation y=2x + 3?

• 2

• 3

Tags

CCSS.8.EE.B.5

What do you have to multiply the first equation by to have the x's be opposite and the same?

• 3

• 2

• -2

• -3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of Equation (x,y)
x + 4y = –3
 x + 7y = –12 

• (-3,9)

• (9,-3)

• (3,9)

• (9,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the slope and the y intercept of the following?
y = 3x - 9

• Slope = 3
  y-int = 9

• slope = 3
  y-int = -9

• slope = -9
  y-int = 3

• slope = 9
  y-int = -3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A system of two identical (overlapping) lines will have how many solutions?

• One Solution

• Two Solutions

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.8A