Solving the System of Equations by Substituting

What is the solution to this system?
y= 4x + 3
2x - 3y = 21

• (3,-9)
• (-3,-9)
• (-3,9)
• (0,1)

What is the solution to this system?
x= 7 - 2y
2x + y = 5

• (-1,4)
• (4,-1)
• (1,3)
• (3,1)

What is the solution to this system?
y = x + 5
4x + y = 20

• (3,8)
• (8,3)
• (0,2)
• (2,0)

What is the solution to this system?
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

What is the solution to this system?
y = 4x + 1
3x + 2y = 13

• (1, 5)
• (5, 1)
• (0.25, 2)
• (-1,5)

What is the solution to this system?
y = x
3x - 2y = 3

• (1,1)
• (3,3)
• (-2,0)
• (0,-2)

What is the solution to the system of equations? 
y = 3x - 8
y = 4 - x

• (3,1)
• (1,3)
• (-3,1)
• (3,-1)

What is the solution to the system?
x - 2y = 2
3x + 4y = 3

• (1.4, -0.3)
• (3.1, 5)
• (-2.5, 3.5)
• (6.9, 1.02)

What is the solution to the system?
2x - 2y = 2
y = -5x + 14

• (4, 5)
• (2.5, 1.5)
• (1.5, 5)
• (1, 2.25)

What is the solution to this system?
y = 2/3x - 2
y = -x + 3

• (0,3)
• (0,-3)
• (3,0)
• (-3,0)