Solve by Substitution Y

What would the equation look like after the substitution?

(Do not use spaces)

y = -3x + 11 and y = -6x - 13

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What would the equation look like after the substitution?

(Do not use spaces)

y = 5x - 6 and y = 4x - 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What would the equation look like after the substitution?

(Do not use spaces)

y = 4x - 19 and y = -5x + 8

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = 5x - 4
y = x

• 0,1

• 1,1

• -1,2

• 2,3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = x + 20
y = 6x

• 4,24

• 0,24

• -4,21

• 26,0

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the first step in solving a system by Substitution?

• Make sure both equations are in standard form.

• Make sure at least one equation is solved for one variable.

• Make sure both equations are in slope-intercept form.

• Make sure both equations can be solved.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by substitution.
 
5x + 4y= −14
y =  −7x  −  15 

• (-2, -1)

• (1, -2)

• (-2, 1)

• (-1, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

x + 2y = 2
x = -4y + 2

• (-3, 0)

• (0, 2)

• (-3, -2)

• (2, 0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -6x + 5
-2x + y = 5

• (-3, -6)

• (-6, 3)

• (0, 5)

• (-3, 5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -2x + 18
y = 8

• (5, 8)

• (-5, 8)

• (2, 8)

• (-2, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6