M8-Extra Credit #20 - Substitution

What is the solution to the system of equations?

y = 3x - 8

y = 4 - x

• (3, 1)

• (1, 3)

• (-3, 1)

• (3, -1)

Solve:
x = -3y - 17
2x + 3y = -7

• (1, -20)
• (3, 0)
• (-5, -2)
• (10 , -9)

Solve the system of equations using substitution:
-4x + 4y = 8
y = -2x - 10

• (-4, -2)
• (12, -34)
• (4, -18)
• (-2, -6)

x + 2y = 2
x = -4y + 2

• (-3, 0)

• (0, 2)

• (-3, -2)

• (2, 0)

Solve the system by substitution.
 
5x + 4y= −14
y =  −7x  −  15 

• (-2, -1)

• (1, -2)

• (-2, 1)

• (-1, -2)

Is (2,3) a solution to y=2x+1

• yes, because 3=2(2)+1 is true

• yes, because 2=2(3)+1 is true

• no, because when the x=2 the y should be 5

• no, because when the x=2 the y should be 4

Find the solution to these systems

y=4x+4

3x+y=25

• (2,12)

• (3,16)

• (0,25)

• (0,4)

Find the solution to these systems

y=4x

y+5x=18

• (0,4)

• (0,18)

• (9,2)

• (2,8)

Solve for x and y by using the substitution method.

y = -2x

4x - y = 0

• (1,2)

• (0,0)

• No Solutions

• Infinite Solutions

Solve the system by using the substitution method