Math RUles

Solve this system of equations by graphing.

y = 4x - 2

y = -x + 3

• (-2,-1)

• (-1,-2)

• (1,2)

• (2,1)

Tags

CCSS.8.EE.C.8B

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

Tags

CCSS.8.EE.C.8A

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

In a pasture are horses and chickens if there are a total of 28 animals and 80 legs how many chickens and horses?

• 10 horses, 18 chickens
• 16 horses, 12 chickens
• 12 horses, 16 chickens
• 18 horses, 10 chickens

Tags

CCSS.8.EE.C.8C

Solving this system by substitution,
5a - 2b = 14
b = 3a + 7
which of these equations would be the first equation you write, showing the substitution?

• b = 3(5a - 2b) + 7
• 5a - 2b(3a + 7) = 14
• 5a - 2(3a + 7) = 14
• 5(3a + 7) - 2b = 14

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

If you were using elimination to solve this system,
6x - 14y = 42
-18x + 7y = -21
and you wanted to eliminate the x's, which multiplication would you perform?

• Multiply the top equation by 2
• Multiply the top equation by 3
• Multiply the bottom equation by 2
• Multiply the bottom equation by 3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve.   x² = √-36

• x = ± 6
• x = 6i
• x = ± 6i
• x = i√6

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

i⁷⁹

• i
• 1
• -1
• -i

Tags

CCSS.HSN.CN.A.1

Add: (2 + 3i) + (2 - 3i)

• 4 + 6i
• 4
• 13
• 4 + 9i

Tags

CCSS.HSN.CN.A.2

Subtract: (2 + 3i) - (2 - 3i)

• 4 + 6i
• 6
• 13
• 6i

Tags

CCSS.HSA.APR.A.1