Solving systems by Substitution

Solve:
y = 2x -11
-3y = -6x -15

• (-1.5,-4)
• (1.5,4)
• No solution (parallel lines)
• Infinitely many solutions

6x + y = -1
y = -3x - 4

• (3, 1)
• (1, 7)
• (-3, 1)
• (1, -7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -3x + 11
5x + y = 21

• (1, -5)
• (1, 5)
• (-4, 5)
• (5, -4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

5x + y = -10
y = -6x - 13

• (4, 5)
• (-3, -3)
• (3, 5)
• (-3, 5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

x = -3y - 8
x - 2y = -3

• (5, -1)
• (-5, 1)
• (-5,-1)
• (1,-5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6