Question

Solve the system by substitution y = -4x -4 y = -8x

Answer 1

x = 1

Explanation:

Given :

• y = -4x - 4
• y = -8x

Equate the sides :

• -4x - 4 = -8x

Add 4 on both sides :

• -4x - 4 + 4 = -8x + 4
• -4x = -8x + 4

Add 8x on both sides :

• -4x + 8x = -8x + 4 + 8x
• 4x = 4

Divide both sides by 4 :

• 4x/4 = 4/4
• x = 1