Question

Solve the linear system.

x + y = -3

y = 2x

coincident
(-1, -2)
no solution

Answer 1

x = -1 , y = -2

Explanation:

Since y = 2x,

x + y = -3

x + (2x) = -3

3x = -3

x = -3/3

x = -1

Subs x = -1,

y = 2x

y = 2(-1)

y = -2