Substitution With Two Variables

Solve the system of equations using substitution:

-4x + 4y = 8

y = -2x - 10

• (-4, -2)

• (12, -34)

• (4, -18)

• (-2, -6)

Solve the system by substitution:

y = x + 5
4x + y = 20

• (3,8)
• (8,3)
• (0,2)
• (2,0)

Solve:

3x + y = 3

2x - y = 7

Solve for (x,y)

-2x + 6y = 16

-4x - 3y = 2

• (2,2)

• (-2, -2)

• (-2,2)

• (2,1)

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

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

A pair of equations to determine the value of 2 variables is called ?

• Paired equation

• simple equation

• quadratic equation

• simultaneous linear equation

How many methods are there to solve a pair of Simultaneous Linear Equation?

• 2

• 3

• 4

• 1

If you were using the substitution method and found "x=0". This means there is no solution.

• True

• False

Solve for (x,y)

5x + y = 9

10x − 7y = −18

• (-4,-1)

• (-1,-4)

• (4,1)

• (1, 4)

y = -6
-3x - 6y = 24

• (6, 6)
• (6, -6)
• (4, -6)
• (-6, 4)