Question

Sã se rezolve sistemele de ecuatii si sa se interpreteze geometric rezultatele:
•X-3y=1
2x-6y=-2

•3x+y=8
9x+3y=24

Answer 1

x-3y=1 |*-2

2x-6y=-2

-2x-6y=-2

2x-6y=-2

/-12y=-4

y=3

x-3*3=1

x-9=1

x=10

S={10,3}

3x+y=8 |*-3

9x+3y=24

-9x-3y=-24

9x+3y=24

/0=0 "A"

S=∅