Question

Solve using linear combination.

y - x = -3
y + x = 3

A) (-3,0)

B) (3,0)

C) (0,3)

D) (0,-3)

Answer 1

y - x = -3

y + x = 3

I + II

2y = 0

y = 0

0 + x = 3 --> x = 3

b) (3, 0)