Question

Solve the system using substitution: x = -4y and x + 5y = 2
Please and thank you.

Answer 1

x = - 8, y = 2

Explanation:

`x = - 4y......(1) \\ x + 5y = 2....(2) \\ plug \: x = - 4y \: in \: equation \: (2) \\ - 4y + 5y = 2 \\ y = 2 \\ plug \: y = 2 \: in \: equation \: (1) \\ x = - 4(2) \\ x = - 8\\`