Substitution in Algebra

If a = 4 and b = 6, what is the value of 3a + 5b?

• 40

• 42

• 44

• 46

Tags

CCSS.6.EE.A.2C

If y = 4, find the value of 3y+5.

• 27

• 12

• 17

• 18

Tags

CCSS.6.EE.A.2C

If a=3, and b= -1, then (ab)² =

• -3

• -9

• 3

• 9

Tags

CCSS.6.EE.A.2C

If x= -3, y=4 and z= 1, evaluate 2x + 3y -5z

• -1

• 13

• -13

• 1

Tags

CCSS.6.EE.A.2C

Solve the system of linear equations by substitution.

5x + 2y = 9

x + y = -3

​ ​ ​ (a)   ​ (b)  

• y = -22

• x = -3

• x = 1

• y = -4

• x = 5

• y = -8

• x = -8

• y = 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by Substitution:

x = -3y - 17

2x + 3y = -7

• (1, -20)

• (3, 0)

• (-5, -2)

• (10 , -9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of linear equations by substitution.

-5x + 3y = 51

y = 10x - 8​

​ ​ ​ (a)   ​ (b)  

• y = -22

• x = -3

• x = 59/25

• y = 15.6

• x = 3

• y = 22

• x = -8

• y = 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

If x = -3, in the equation -2x + y = 15, what is y? Type in the number.

The solution to the system of equations x + 2y = 2 and x = -4y + 2 is (a)   .

• (2, 0)

• (0, 2)

• (1, 1)

• (-2, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which choice shows substitution correctly?

• 3x - (-6x +3) = 10

• 3(-6x + 3) - y = 10

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6