Hi can you help me with an algebra assignment pleasy=-7x,y=4x+22 solve the system by substitution.

asked Aug 1, 2023 156k views

1 vote

8.2k points

Please log in or register to add a comment.

5 votes

Given:

$\begin{gathered} y=-7x \\ y=4x+22 \end{gathered}$

Put y=-7x in second equation,

$\begin{gathered} y=4x+22 \\ -7x=4x+22 \\ -7x-4x=22 \\ -11x=22 \\ x=-(22)/(11) \\ x=-2 \end{gathered}$

Put the value of x in first equation,

Answer: x = -2, y = 14.

Renan Grativol answered Aug 7, 2023

7.5k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.3m questions

12.0m answers