Systems Bellwork Game

Elimination, Part 1: #1-4: Which ones could we immediately solve by adding first?

• #1

• #2

• #3

• #4

Tags

CCSS.HSA.REI.C.6

Elimination, Part 1: Why is is better to subtract first on #4? (Pick the best answer)

• Because we have opposite coefficients

• Because we have same coefficients

• Because both are in standard form

• Because we don't need to multiply first.

Tags

CCSS.HSA.REI.C.6

Elimination, Part 1: How can you tell when you have infinite solutions when using elimination? (Pick two)

• All variables and constants will cancel out

• All variables will cancel out, but not the constants

• You will have a true statement like 0=0

• One variable and the constant will cancel out (x=0)

• You will have a false statement like 0=12

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

Elimination, Part 1: How can you tell when you have no solution when using elimination? (Pick two)

• All variables and constants will cancel out

• All variables will cancel out, but not the constant

• You will have a true statement like 0=0

• One variable and the constant will cancel out (x=0)

• You will have a false statement like 0=12

Tags

CCSS.HSA.REI.C.6

Elimination, Part 1: How can you tell when you have one solution when using elimination? (Pick two)

• All variables and constants will cancel out

• All variables will cancel out

• One variable will cancel out (like x=12)

• One variable and the constant will cancel out (x=0)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

Elimination, Part 1: Labeling: Which were infinite solutions? (a thru d)

• a and c

• a, b, c

• b

• d

• b and d

Tags

CCSS.HSA.REI.C.6

Elimination, Part 1: Labeling: Which were no solutions? (a thru d)

• a and c

• a, b, c

• b

• d

• b and d

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

CCSS.HSA.REI.D.10

CCSS.HSA.REI.C.7

Elimination, Part 1: Labeling: Which were 1 solutions? (a thru d)

• a and c

• a, b, c

• b

• d

• b and d

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

Elimination, Part 2: #1 (What is the best first step)

• Multiply the bottom equation by 3

• Multiply the bottom equation by -3

• Multiply the top equation by 3

• Multiply the top equation by -3

Tags

CCSS.HSA.REI.C.6

Elimination, Part 2: #2 What are the best first steps (pick 2)

• Multiply the bottom equation by 2 (or -2)

• Multiply the bottom equation by 5 (or -5)

• Multiply the top equation by 5 (or -5)

• Multiply the top equation by 2 (or -2)

Tags

CCSS.HSA.REI.C.6