Substitution REVIEW

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

• 27
• 12
• 17

If y=10
find the value of 5(y+1)

• 11
• 55
• 20

If y=7,find the value of 2(y+4)

• 11
• 22
• 20

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

• 27
• 12
• 9

If x=5,find the value of 7x-1

• 34
• 36
• 35

Solve 2(y + 2)
if y = 5

• 32
• 14
• 67
• 8

Solve:
3x + 5
if x = 4

• 39
• 17
• 12
• 8

Solve
20 - 2n
if n = 3 

• 14
• 54
• -3

Solve the system of equations:
y = 4
x = 2y + 24
1.  Substitute y for 4 in the 2nd equation
2.  Add the numbers. 
3.  Your answer is (x,y) 

• (32, 4)
• (3,4)

Solve the system of equations:
x = 2
4x + 8 = y
1.  Substitute x for 2 in the 2nd equation
2.  Add the numbers. 
3.  Your answer is (x,y) 

• (2, 16)
• (2, 6)